78th United States Congress

The 78th United States Congress was a meeting of the legislative branch of the United States federal government, composed of the United States Senate and the United States House of Representatives. It met in Washington, D.C., from January 3, 1943, to January 3, 1945, during the last two years of Franklin D. Roosevelt's presidency. The apportionment of seats in the House of Representatives was based on the 1940 United States census.

Both chambers had a Democratic majority - albeit greatly reduced from the 77th Congress, with the Democrats losing their supermajority in the House and Senate. Along with President Franklin D. Roosevelt, the Democrats maintained an overall federal government trifecta.

Major events

 * World War II continued (1941–1945)
 * June 6, 1944: Battle of Normandy
 * November 7, 1944: General elections:
 * President Roosevelt was re-elected to a fourth term.
 * Senate Democrats kept their majority despite 1-seat net loss.
 * House Democrats increased their majority with a 20-seat net gain.

Major legislation

 * December 17, 1943: Magnuson Act (Chinese Exclusion Repeal Act of 1943), Sess. 1, ch. 344,
 * February 3, 1944: Mustering-out Payment Act, Sess. 2, ,
 * June 6, 1944: Servicemen's Readjustment Act of 1944 (G.I. Bill), Sess. 2, ch. 268, ,
 * June 27, 1944: Veterans' Preference Act, Sess. 2, ch. 287, ,
 * July 1, 1944: Public Health Service Act, Sess. 2, ch. 373,
 * December 22, 1944: Pick-Sloan Flood Control Act, Sess. 2, ch. 665, ,

Senate

 * President: Henry A. Wallace (D)
 * President pro tempore: Carter Glass (D)

Majority (Democratic) leadership

 * Majority Leader: Alben W. Barkley
 * Majority Whip: J. Lister Hill
 * Democratic Caucus Secretary: Francis T. Maloney

Minority (Republican) leadership

 * Minority Leader: Charles L. McNary, until February 25, 1944
 * Wallace H. White Jr., after February 25, 1944
 * Minority whip: No Republican whips were appointed from 1935 to 1944 since only 17 Republicans were in the Senate following the landslide reelection of President Franklin D. Roosevelt in 1936. Accordingly, the minutes of the Republican Conference for the period state: "On motion of Senator Hastings, duly seconded and carried, it was agreed that no Assistant Leader or Whip be elected but that the chairman be authorized to appoint Senators from time to time to assist him in taking charge of the interests of the minority." A note attached to the conference minutes added: "The chairman of the conference, Senator McNary, apparently appointed Senator Austin of Vermont as assistant leader in 1943 and 1944, until the conference adopted Rules of Organization."
 * Republican Conference Secretary: Wallace H. White Jr., until February 25, 1944
 * Harold Hitz Burton (from February 25, 1944)
 * National Senatorial Committee Chair: John G. Townsend Jr.

House of Representatives

 * Speaker: Sam Rayburn (D)

Majority (Democratic) leadership

 * Majority Leader: John W. McCormack
 * Majority whip: Robert Ramspeck
 * Democratic Caucus Chairman: Harry R. Sheppard
 * Democratic Campaign Committee Chairman: Patrick H. Drewry

Minority (Republican) leadership

 * Minority Leader: Joseph W. Martin Jr.
 * Minority whip: Harry Lane Englebright, until May 13, 1943
 * Leslie C. Arends, from May 13, 1943
 * Republican Conference Chairman: Roy O. Woodruff
 * Republican Campaign Committee Chairman: Charles A. Halleck

Senate
Senators are popularly elected statewide every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election, In this Congress, Class 3 meant their term ended with this Congress, facing re-election in 1944; Class 1 meant their term began in the last Congress, facing re-election in 1946; and Class 2 meant their term began in this Congress, facing re-election in 1948.

Alabama

 * 2. John H. Bankhead II (D)
 * 3. J. Lister Hill (D)

Arizona

 * 1. Ernest McFarland (D)
 * 3. Carl Hayden (D)

Arkansas

 * 2. John L. McClellan (D)
 * 3. Hattie Caraway (D)

California

 * 1. Hiram W. Johnson (R)
 * 3. Sheridan Downey (D)

Colorado

 * 2. Edwin C. Johnson (D)
 * 3. Eugene Millikin (R)

Connecticut

 * 1. Francis T. Maloney (D)
 * 3. John A. Danaher (R)

Delaware

 * 1. James M. Tunnell (D)
 * 2. C. Douglass Buck (R)

Florida

 * 1. Charles O. Andrews (D)
 * 3. Claude Pepper (D)

Georgia

 * 2. Richard Russell Jr. (D)
 * 3. Walter F. George (D)

Idaho

 * 2. John Thomas (R)
 * 3. D. Worth Clark (D)

Illinois

 * 2. Charles W. Brooks (R)
 * 3. Scott W. Lucas (D)

Indiana

 * 1. Raymond E. Willis (R)
 * 3. Frederick Van Nuys (D), until January 25, 1944
 * Samuel D. Jackson (D), January 28, 1944 – November 13, 1944
 * William E. Jenner (R), from November 14, 1944

Iowa

 * 2. George A. Wilson (R)
 * 3. Guy M. Gillette (D)

Kansas

 * 2. Arthur Capper (R)
 * 3. Clyde M. Reed (R)

Kentucky

 * 2. Happy Chandler (D)
 * 3. Alben Barkley (D)

Louisiana

 * 2. Allen J. Ellender (D)
 * 3. John H. Overton (D)

Maine

 * 1. Ralph Owen Brewster (R)
 * 2. Wallace H. White Jr. (R)

Maryland

 * 1. George L. P. Radcliffe (D)
 * 3. Millard Tydings (D)

Massachusetts

 * 1. David I. Walsh (D)
 * 2. Henry Cabot Lodge Jr. (R), until February 3, 1944
 * Sinclair Weeks (R), February 8, 1944 – December 19, 1944
 * Leverett Saltonstall (R), from December 19, 1944

Michigan

 * 1. Arthur H. Vandenberg (R)
 * 2. Homer S. Ferguson (R)

Minnesota

 * 1. Henrik Shipstead (R)
 * 2. Joseph H. Ball (R)

Mississippi

 * 1. Theodore G. Bilbo (D)
 * 2. James Eastland (D)

Missouri

 * 1. Harry S. Truman (D)
 * 3. Bennett Champ Clark (D)

Montana

 * 1. Burton K. Wheeler (D)
 * 2. James E. Murray (D)

Nebraska

 * 1. Hugh A. Butler (R)
 * 2. Kenneth S. Wherry (R)

Nevada

 * 1. James G. Scrugham (D)
 * 3. Patrick A. McCarran (D)

New Hampshire

 * 2. Styles Bridges (R)
 * 3. Charles W. Tobey (R)

New Jersey

 * 1. William Warren Barbour (R), until November 22, 1943
 * Arthur Walsh (D), November 26, 1943 – December 7, 1944
 * Howard Alexander Smith (R), from December 7, 1944
 * 2. Albert W. Hawkes (R)

New Mexico

 * 1. Dennis Chávez (D)
 * 2. Carl Hatch (D)

New York

 * 1. James M. Mead (D)
 * 3. Robert F. Wagner (D)

North Carolina

 * 2. Josiah William Bailey (D)
 * 3. Robert R. Reynolds (D)

North Dakota

 * 1. William Langer (R-NPL)
 * 3. Gerald Nye (R)

Ohio

 * 1. Harold Hitz Burton (R)
 * 3. Robert A. Taft (R)

Oklahoma

 * 2. Edward H. Moore (R)
 * 3. Elmer Thomas (D)

Oregon

 * 2. Charles L. McNary (R), until February 25, 1944
 * Guy Cordon (R), from March 4, 1944
 * 3. Rufus C. Holman (R)

Pennsylvania

 * 1. Joseph F. Guffey (D)
 * 3. James J. Davis (R)

Rhode Island

 * 1. Peter G. Gerry (D)
 * 2. Theodore F. Green (D)

South Carolina

 * 2. Burnet R. Maybank (D)
 * 3. Ellison D. Smith (D), until November 17, 1944
 * Wilton E. Hall (D), from November 20, 1944

South Dakota

 * 2. Harlan J. Bushfield (R)
 * 3. John Chandler Gurney (R)

Tennessee

 * 1. Kenneth McKellar (D)
 * 2. Tom Stewart (D)

Texas

 * 1. Tom T. Connally (D)
 * 2. W. Lee O'Daniel (D)

Utah

 * 1. Abe Murdock (D)
 * 3. Elbert D. Thomas (D)

Vermont

 * 1. Warren Austin (R)
 * 3. George Aiken (R)

Virginia

 * 1. Harry F. Byrd (D)
 * 2. Carter Glass (D)

Washington

 * 1. Monrad Wallgren (D)
 * 3. Homer Bone (D), until November 13, 1944
 * Warren G. Magnuson (D), from December 14, 1944

West Virginia

 * 1. Harley M. Kilgore (D)
 * 2. Chapman Revercomb (R)

Wisconsin

 * 1. Robert M. La Follette Jr. (P)
 * 3. Alexander Wiley (R)

Wyoming

 * 1. Joseph C. O'Mahoney (D)
 * 2. Edward V. Robertson (R)



House of Representatives
The names of members of the House of Representatives are preceded by their district numbers.

Alabama

 * Alabama's 1st congressional district. Frank W. Boykin (D)
 * Alabama's 2nd congressional district. George M. Grant (D)
 * Alabama's 3rd congressional district. Henry B. Steagall (D), until November 22, 1943
 * George W. Andrews (D), from March 14, 1944
 * Alabama's 4th congressional district. Sam Hobbs (D)
 * Alabama's 5th congressional district. Joe Starnes (D)
 * Alabama's 6th congressional district. Pete Jarman (D)
 * Alabama's 7th congressional district. Carter Manasco (D)
 * Alabama's 8th congressional district. John J. Sparkman (D)
 * Alabama's 9th congressional district. John P. Newsome (D)

Arizona

 * At-large. John R. Murdock (D)
 * At-large. Richard F. Harless (D)

Arkansas

 * Arkansas's 1st congressional district. Ezekiel C. Gathings (D)
 * Arkansas's 2nd congressional district. Wilbur Mills (D)
 * Arkansas's 3rd congressional district. J. William Fulbright (D)
 * Arkansas's 4th congressional district. William Fadjo Cravens (D)
 * Arkansas's 5th congressional district. Brooks Hays (D)
 * Arkansas's 6th congressional district. William F. Norrell (D)
 * Arkansas's 7th congressional district. Oren Harris (D)

California

 * California's 1st congressional district. Clarence F. Lea (D)
 * California's 2nd congressional district. Harry L. Englebright (R), until May 13, 1943
 * Clair Engle (D), from August 31, 1943
 * California's 3rd congressional district. J. Leroy Johnson (R)
 * California's 4th congressional district. Thomas Rolph (R)
 * California's 5th congressional district. Richard J. Welch (R)
 * California's 6th congressional district. Albert E. Carter (R)
 * California's 7th congressional district. John H. Tolan (D)
 * California's 8th congressional district. Jack Z. Anderson (R)
 * California's 9th congressional district. Bertrand W. Gearhart (R)
 * California's 10th congressional district. Alfred J. Elliott (D)
 * California's 11th congressional district. George E. Outland (D)
 * California's 12th congressional district. Jerry Voorhis (D)
 * California's 13th congressional district. Norris Poulson (R)
 * California's 14th congressional district. Thomas F. Ford (D)
 * California's 15th congressional district. John M. Costello (D)
 * California's 16th congressional district. Will Rogers Jr. (D), until May 23, 1944
 * California's 17th congressional district. Cecil R. King (D)
 * California's 18th congressional district. William Ward Johnson (R)
 * California's 19th congressional district. Chester E. Holifield (D)
 * California's 20th congressional district. John Carl Hinshaw (R)
 * California's 21st congressional district. Harry R. Sheppard (D)
 * California's 22nd congressional district. John R. Phillips (R)
 * California's 23rd congressional district. Edouard V. M. Izac (D)

Colorado

 * Colorado's 1st congressional district. Lawrence Lewis (D), until December 9, 1943
 * Dean M. Gillespie (R), from March 7, 1944
 * Colorado's 2nd congressional district. William S. Hill (R)
 * Colorado's 3rd congressional district. John Chenoweth (R)
 * Colorado's 4th congressional district. Robert F. Rockwell (R)

Connecticut

 * Connecticut's 1st congressional district. William J. Miller (R)
 * Connecticut's 2nd congressional district. John D. McWilliams (R)
 * Connecticut's 3rd congressional district. Ranulf Compton (R)
 * Connecticut's 4th congressional district. Clare Boothe Luce (R)
 * Connecticut's 5th congressional district. Joseph E. Talbot (R)
 * At-large. B. J. Monkiewicz (R)

Delaware

 * At-large. Earle D. Willey (R)

Florida

 * Florida's 1st congressional district. J. Hardin Peterson (D)
 * Florida's 2nd congressional district. Emory H. Price (D)
 * Florida's 3rd congressional district. Robert L. F. Sikes (D), until October 19, 1944
 * Florida's 4th congressional district. Pat Cannon (D)
 * Florida's 5th congressional district. Joe Hendricks (D)
 * At-large. Robert A. Green (D), until November 25, 1944

Georgia

 * Georgia's 1st congressional district. Hugh Peterson (D)
 * Georgia's 2nd congressional district. Edward E. Cox (D)
 * Georgia's 3rd congressional district. Stephen Pace (D)
 * Georgia's 4th congressional district. Albert Sidney Camp (D)
 * Georgia's 5th congressional district. Robert Ramspeck (D)
 * Georgia's 6th congressional district. Carl Vinson (D)
 * Georgia's 7th congressional district. Malcolm C. Tarver (D)
 * Georgia's 8th congressional district. John S. Gibson (D)
 * Georgia's 9th congressional district. B. Frank Whelchel (D)
 * Georgia's 10th congressional district. Paul Brown (D)

Idaho

 * Idaho's 1st congressional district. Compton I. White (D)
 * Idaho's 2nd congressional district. Henry Dworshak (R)

Illinois

 * Illinois's 1st congressional district. William L. Dawson (D)
 * Illinois's 2nd congressional district. William A. Rowan (D)
 * Illinois's 3rd congressional district. Fred E. Busbey (R)
 * Illinois's 4th congressional district. Martin Gorski (D)
 * Illinois's 5th congressional district. Adolph J. Sabath (D)
 * Illinois's 6th congressional district. Thomas J. O'Brien (D)
 * Illinois's 7th congressional district. Leonard W. Schuetz (D), until February 13, 1944
 * Illinois's 8th congressional district. Thomas S. Gordon (D)
 * Illinois's 9th congressional district. Charles S. Dewey (R)
 * Illinois's 10th congressional district. Ralph E. Church (R)
 * Illinois's 11th congressional district. Chauncey W. Reed (R)
 * Illinois's 12th congressional district. Noah M. Mason (R)
 * Illinois's 13th congressional district. Leo E. Allen (R)
 * Illinois's 14th congressional district. Anton J. Johnson (R)
 * Illinois's 15th congressional district. Robert B. Chiperfield (R)
 * Illinois's 16th congressional district. Everett M. Dirksen (R)
 * Illinois's 17th congressional district. Leslie C. Arends (R)
 * Illinois's 18th congressional district. Jessie Sumner (R)
 * Illinois's 19th congressional district. William H. Wheat (R), until January 16, 1944
 * Rolla C. McMillen (R), from June 13, 1944
 * Illinois's 20th congressional district. Sid Simpson (R)
 * Illinois's 21st congressional district. George Evan Howell (R)
 * Illinois's 22nd congressional district. Calvin D. Johnson (R)
 * Illinois's 23rd congressional district. Charles W. Vursell (R)
 * Illinois's 24th congressional district. James V. Heidinger (R)
 * Illinois's 25th congressional district. C. W. Bishop (R)
 * At-large. Stephen A. Day (R)

Indiana

 * Indiana's 1st congressional district. Ray Madden (D)
 * Indiana's 2nd congressional district. Charles A. Halleck (R)
 * Indiana's 3rd congressional district. Robert A. Grant (R)
 * Indiana's 4th congressional district. George W. Gillie (R)
 * Indiana's 5th congressional district. Forest Harness (R)
 * Indiana's 6th congressional district. Noble J. Johnson (R)
 * Indiana's 7th congressional district. Gerald W. Landis (R)
 * Indiana's 8th congressional district. Charles M. La Follette (R)
 * Indiana's 9th congressional district. Earl Wilson (R)
 * Indiana's 10th congressional district. Raymond S. Springer (R)
 * Indiana's 11th congressional district. Louis Ludlow (D)

Iowa

 * Iowa's 1st congressional district. Thomas E. Martin (R)
 * Iowa's 2nd congressional district. Henry O. Talle (R)
 * Iowa's 3rd congressional district. John W. Gwynne (R)
 * Iowa's 4th congressional district. Karl M. LeCompte (R)
 * Iowa's 5th congressional district. Paul H. Cunningham (R)
 * Iowa's 6th congressional district. Fred C. Gilchrist (R)
 * Iowa's 7th congressional district. Ben F. Jensen (R)
 * Iowa's 8th congressional district. Charles B. Hoeven (R)

Kansas

 * Kansas's 1st congressional district. William P. Lambertson (R)
 * Kansas's 2nd congressional district. Ulysses S. Guyer (R), until June 5, 1943
 * Errett P. Scrivner (R), from September 14, 1943
 * Kansas's 3rd congressional district. Thomas Daniel Winter (R)
 * Kansas's 4th congressional district. Edward Herbert Rees (R)
 * Kansas's 5th congressional district. Clifford R. Hope (R)
 * Kansas's 6th congressional district. Frank Carlson (R)

Kentucky

 * Kentucky's 1st congressional district. Noble J. Gregory (D)
 * Kentucky's 2nd congressional district. Beverly M. Vincent (D)
 * Kentucky's 3rd congressional district. Emmet O'Neal (D)
 * Kentucky's 4th congressional district. Edward W. Creal (D), until October 13, 1943
 * Chester O. Carrier (R), from November 30, 1943
 * Kentucky's 5th congressional district. Brent Spence (D)
 * Kentucky's 6th congressional district. Virgil Chapman (D)
 * Kentucky's 7th congressional district. Andrew J. May (D)
 * Kentucky's 8th congressional district. Joe B. Bates (D)
 * Kentucky's 9th congressional district. John M. Robsion (R)

Louisiana

 * Louisiana's 1st congressional district. F. Edward Hébert (D)
 * Louisiana's 2nd congressional district. Paul H. Maloney (D)
 * Louisiana's 3rd congressional district. James R. Domengeaux (D), until April 15, 1944
 * Louisiana's 3rd congressional district. James R. Domengeaux (D), from November 7, 1944
 * Louisiana's 4th congressional district. Overton Brooks (D)
 * Louisiana's 5th congressional district. Charles E. McKenzie (D)
 * Louisiana's 6th congressional district. James H. Morrison (D)
 * Louisiana's 7th congressional district. Henry D. Larcade Jr. (D)
 * Louisiana's 8th congressional district. A. Leonard Allen (D)

Maine

 * Maine's 1st congressional district. Robert Hale (R)
 * Maine's 2nd congressional district. Margaret Chase Smith (R)
 * Maine's 3rd congressional district. Frank Fellows (R)

Maryland

 * Maryland's 1st congressional district. David Jenkins Ward (D)
 * Maryland's 2nd congressional district. Harry Streett Baldwin (D)
 * Maryland's 3rd congressional district. Thomas D'Alesandro Jr. (D)
 * Maryland's 4th congressional district. Daniel Ellison (R)
 * Maryland's 5th congressional district. Lansdale G. Sasscer (D)
 * Maryland's 6th congressional district. James Glenn Beall (R)

Massachusetts

 * Massachusetts's 1st congressional district. Allen T. Treadway (R)
 * Massachusetts's 2nd congressional district. Charles Clason (R)
 * Massachusetts's 3rd congressional district. Philip J. Philbin (D)
 * Massachusetts's 4th congressional district. Pehr G. Holmes (R)
 * Massachusetts's 5th congressional district. Edith Nourse Rogers (R)
 * Massachusetts's 6th congressional district. George J. Bates (R)
 * Massachusetts's 7th congressional district. Thomas J. Lane (D)
 * Massachusetts's 8th congressional district. Angier Goodwin (R)
 * Massachusetts's 9th congressional district. Charles L. Gifford (R)
 * Massachusetts's 10th congressional district. Christian Herter (R)
 * Massachusetts's 11th congressional district. James Michael Curley (D)
 * Massachusetts's 12th congressional district. John W. McCormack (D)
 * Massachusetts's 13th congressional district. Richard B. Wigglesworth (R)
 * Massachusetts's 14th congressional district. Joseph W. Martin Jr. (R)

Michigan

 * Michigan's 1st congressional district. George G. Sadowski (D)
 * Michigan's 2nd congressional district. Earl C. Michener (R)
 * Michigan's 3rd congressional district. Paul W. Shafer (R)
 * Michigan's 4th congressional district. Clare E. Hoffman (R)
 * Michigan's 5th congressional district. Bartel J. Jonkman (R)
 * Michigan's 6th congressional district. William W. Blackney (R)
 * Michigan's 7th congressional district. Jesse P. Wolcott (R)
 * Michigan's 8th congressional district. Fred L. Crawford (R)
 * Michigan's 9th congressional district. Albert J. Engel (R)
 * Michigan's 10th congressional district. Roy O. Woodruff (R)
 * Michigan's 11th congressional district. Fred Bradley (R)
 * Michigan's 12th congressional district. John B. Bennett (R)
 * Michigan's 13th congressional district. George D. O'Brien (D)
 * Michigan's 14th congressional district. Louis C. Rabaut (D)
 * Michigan's 15th congressional district. John D. Dingell Sr. (D)
 * Michigan's 16th congressional district. John Lesinski Sr. (D)
 * Michigan's 17th congressional district. George A. Dondero (R)

Minnesota

 * Minnesota's 1st congressional district. August H. Andresen (R)
 * Minnesota's 2nd congressional district. Joseph P. O'Hara (R)
 * Minnesota's 3rd congressional district. Richard Pillsbury Gale (R)
 * Minnesota's 4th congressional district. Melvin Maas (R)
 * Minnesota's 5th congressional district. Walter Judd (R)
 * Minnesota's 6th congressional district. Harold Knutson (R)
 * Minnesota's 7th congressional district. Herman Carl Andersen (R)
 * Minnesota's 8th congressional district. William Pittenger (R)
 * Minnesota's 9th congressional district. Harold Hagen (FL), changed to (R) on April 15, 1944

Mississippi

 * Mississippi's 1st congressional district. John E. Rankin (D)
 * Mississippi's 2nd congressional district. Jamie L. Whitten (D)
 * Mississippi's 3rd congressional district. William M. Whittington (D)
 * Mississippi's 4th congressional district. Thomas Abernethy (D)
 * Mississippi's 5th congressional district. W. Arthur Winstead (D)
 * Mississippi's 6th congressional district. William M. Colmer (D)
 * Mississippi's 7th congressional district. Dan R. McGehee (D)

Missouri

 * Missouri's 1st congressional district. Samuel W. Arnold (R)
 * Missouri's 2nd congressional district. Max Schwabe (R)
 * Missouri's 3rd congressional district. William Clay Cole (R)
 * Missouri's 4th congressional district. C. Jasper Bell (D)
 * Missouri's 5th congressional district. Roger C. Slaughter (D)
 * Missouri's 6th congressional district. Marion T. Bennett (R), from January 12, 1943
 * Missouri's 7th congressional district. Dewey Short (R)
 * Missouri's 8th congressional district. William P. Elmer (R)
 * Missouri's 9th congressional district. Clarence Cannon (D)
 * Missouri's 10th congressional district. Orville Zimmerman (D)
 * Missouri's 11th congressional district. Louis E. Miller (R)
 * Missouri's 12th congressional district. Walter C. Ploeser (R)
 * Missouri's 13th congressional district. John J. Cochran (D)

Montana

 * Montana's 1st congressional district. Mike Mansfield (D)
 * Montana's 2nd congressional district. James F. O'Connor (D)

Nebraska

 * Nebraska's 1st congressional district. Carl Curtis (R)
 * Nebraska's 2nd congressional district. Howard Buffett (R)
 * Nebraska's 3rd congressional district. Karl Stefan (R)
 * Nebraska's 4th congressional district. Arthur L. Miller (R)

Nevada

 * At-large. Maurice J. Sullivan (D)

New Hampshire

 * New Hampshire's 1st congressional district. Chester Earl Merrow (R)
 * New Hampshire's 2nd congressional district. Foster Waterman Stearns (R)

New Jersey

 * New Jersey's 1st congressional district. Charles A. Wolverton (R)
 * New Jersey's 2nd congressional district. Elmer H. Wene (D)
 * New Jersey's 3rd congressional district. James C. Auchincloss (R)
 * New Jersey's 4th congressional district. D. Lane Powers (R)
 * New Jersey's 5th congressional district. Charles A. Eaton (R)
 * New Jersey's 6th congressional district. Donald H. McLean (R)
 * New Jersey's 7th congressional district. J. Parnell Thomas (R)
 * New Jersey's 8th congressional district. Gordon Canfield (R)
 * New Jersey's 9th congressional district. Harry L. Towe (R)
 * New Jersey's 10th congressional district. Fred A. Hartley Jr. (R)
 * New Jersey's 11th congressional district. Frank Sundstrom (R)
 * New Jersey's 12th congressional district. Robert Kean (R)
 * New Jersey's 13th congressional district. Mary T. Norton (D)
 * New Jersey's 14th congressional district. Edward J. Hart (D)

New Mexico

 * At-large. Clinton P. Anderson (D)
 * At-large. Antonio M. Fernández (D)

New York

 * New York's 1st congressional district. Leonard W. Hall (R)
 * New York's 2nd congressional district. William B. Barry (D)
 * New York's 3rd congressional district. Joseph L. Pfeifer (D)
 * New York's 4th congressional district. Thomas H. Cullen (D), until March 1, 1944
 * John J. Rooney (D), from June 6, 1944
 * New York's 5th congressional district. James J. Heffernan (D)
 * New York's 6th congressional district. Andrew L. Somers (D)
 * New York's 7th congressional district. John J. Delaney (D)
 * New York's 8th congressional district. Donald L. O'Toole (D)
 * New York's 9th congressional district. Eugene J. Keogh (D)
 * New York's 10th congressional district. Emanuel Celler (D)
 * New York's 11th congressional district. James A. O'Leary (D), until March 16, 1944
 * Ellsworth B. Buck (R), from June 6, 1944
 * New York's 12th congressional district. Samuel Dickstein (D)
 * New York's 13th congressional district. Louis Capozzoli (D)
 * New York's 14th congressional district. Arthur George Klein (D)
 * New York's 15th congressional district. Thomas F. Burchill (D)
 * New York's 16th congressional district. James H. Fay (D)
 * New York's 17th congressional district. Joseph C. Baldwin (R)
 * New York's 18th congressional district. Martin J. Kennedy (D)
 * New York's 19th congressional district. Sol Bloom (D)
 * New York's 20th congressional district. Vito Marcantonio (AL)
 * New York's 21st congressional district. Joseph A. Gavagan (D), until December 30, 1943
 * James H. Torrens (D), from February 29, 1944
 * New York's 22nd congressional district. Walter A. Lynch (D)
 * New York's 23rd congressional district. Charles A. Buckley (D)
 * New York's 24th congressional district. James M. Fitzpatrick (D)
 * New York's 25th congressional district. Ralph A. Gamble (R)
 * New York's 26th congressional district. Hamilton Fish III (R)
 * New York's 27th congressional district. Jay Le Fevre (R)
 * New York's 28th congressional district. William T. Byrne (D)
 * New York's 29th congressional district. Dean P. Taylor (R)
 * New York's 30th congressional district. Bernard W. Kearney (R)
 * New York's 31st congressional district. Clarence E. Kilburn (R)
 * New York's 32nd congressional district. Francis D. Culkin (R), until August 4, 1943
 * Hadwen C. Fuller (R), from November 2, 1943
 * New York's 33rd congressional district. Fred J. Douglas (R)
 * New York's 34th congressional district. Edwin Arthur Hall (R)
 * New York's 35th congressional district. Clarence E. Hancock (R)
 * New York's 36th congressional district. John Taber (R)
 * New York's 37th congressional district. W. Sterling Cole (R)
 * New York's 38th congressional district. Joseph J. O'Brien (R)
 * New York's 39th congressional district. James W. Wadsworth Jr. (R)
 * New York's 40th congressional district. Walter G. Andrews (R)
 * New York's 41st congressional district. Joseph Mruk (R)
 * New York's 42nd congressional district. John Cornelius Butler (R)
 * New York's 43rd congressional district. Daniel A. Reed (R)
 * At-large. Matthew J. Merritt (D)
 * At-large. Winifred C. Stanley (R)

North Carolina

 * North Carolina's 1st congressional district. Herbert Covington Bonner (D)
 * North Carolina's 2nd congressional district. John H. Kerr (D)
 * North Carolina's 3rd congressional district. Graham A. Barden (D)
 * North Carolina's 4th congressional district. Harold D. Cooley (D)
 * North Carolina's 5th congressional district. John Hamlin Folger (D)
 * North Carolina's 6th congressional district. Carl T. Durham (D)
 * North Carolina's 7th congressional district. J. Bayard Clark (D)
 * North Carolina's 8th congressional district. William O. Burgin (D)
 * North Carolina's 9th congressional district. Robert L. Doughton (D)
 * North Carolina's 10th congressional district. Cameron A. Morrison (D)
 * North Carolina's 11th congressional district. Alfred L. Bulwinkle (D)
 * North Carolina's 12th congressional district. Zebulon Weaver (D)

North Dakota

 * At-large. William Lemke (R-NPL)
 * At-large. Usher L. Burdick (R-NPL)

Ohio

 * Ohio's 1st congressional district. Charles H. Elston (R)
 * Ohio's 2nd congressional district. William E. Hess (R)
 * Ohio's 3rd congressional district. Harry P. Jeffrey (R)
 * Ohio's 4th congressional district. Robert Franklin Jones (R)
 * Ohio's 5th congressional district. Cliff Clevenger (R)
 * Ohio's 6th congressional district. Edward O. McCowen (R)
 * Ohio's 7th congressional district. Clarence J. Brown (R)
 * Ohio's 8th congressional district. Frederick Cleveland Smith (R)
 * Ohio's 9th congressional district. Homer A. Ramey (R)
 * Ohio's 10th congressional district. Thomas A. Jenkins (R)
 * Ohio's 11th congressional district. Walter E. Brehm (R)
 * Ohio's 12th congressional district. John M. Vorys (R)
 * Ohio's 13th congressional district. Alvin F. Weichel (R)
 * Ohio's 14th congressional district. Edmund Rowe (R)
 * Ohio's 15th congressional district. Percy W. Griffiths (R)
 * Ohio's 16th congressional district. Henderson H. Carson (R)
 * Ohio's 17th congressional district. J. Harry McGregor (R)
 * Ohio's 18th congressional district. Earl R. Lewis (R)
 * Ohio's 19th congressional district. Michael J. Kirwan (D)
 * Ohio's 20th congressional district. Michael A. Feighan (D)
 * Ohio's 21st congressional district. Robert Crosser (D)
 * Ohio's 22nd congressional district. Frances P. Bolton (R)
 * At-large. George H. Bender (R)

Oklahoma

 * Oklahoma's 1st congressional district. Wesley E. Disney (D)
 * Oklahoma's 2nd congressional district. John Conover Nichols (D), until July 3, 1943
 * William G. Stigler (D), from March 28, 1944
 * Oklahoma's 3rd congressional district. Paul Stewart (D)
 * Oklahoma's 4th congressional district. Lyle Boren (D)
 * Oklahoma's 5th congressional district. A. S. Mike Monroney (D)
 * Oklahoma's 6th congressional district. Jed J. Johnson (D)
 * Oklahoma's 7th congressional district. Victor Wickersham (D)
 * Oklahoma's 8th congressional district. Ross Rizley (R)

Oregon

 * Oregon's 1st congressional district. James W. Mott (R)
 * Oregon's 2nd congressional district. Lowell Stockman (R)
 * Oregon's 3rd congressional district. Homer D. Angell (R)
 * Oregon's 4th congressional district. Harris Ellsworth (R)

Pennsylvania

 * Pennsylvania's 1st congressional district. James A. Gallagher (R)
 * Pennsylvania's 2nd congressional district. James P. McGranery (D), until November 17, 1943
 * Joseph Marmaduke Pratt (R), from January 18, 1944
 * Pennsylvania's 3rd congressional district. Michael J. Bradley (D)
 * Pennsylvania's 4th congressional district. John E. Sheridan (D)
 * Pennsylvania's 5th congressional district. C. Frederick Pracht (R)
 * Pennsylvania's 6th congressional district. Francis J. Myers (D)
 * Pennsylvania's 7th congressional district. Hugh Scott (R)
 * Pennsylvania's 8th congressional district. James Wolfenden (R)
 * Pennsylvania's 9th congressional district. Charles L. Gerlach (R)
 * Pennsylvania's 10th congressional district. J. Roland Kinzer (R)
 * Pennsylvania's 11th congressional district. John W. Murphy (D)
 * Pennsylvania's 12th congressional district. Thomas B. Miller (R)
 * Pennsylvania's 13th congressional district. Ivor D. Fenton (R)
 * Pennsylvania's 14th congressional district. Daniel K. Hoch (D)
 * Pennsylvania's 15th congressional district. Wilson D. Gillette (R)
 * Pennsylvania's 16th congressional district. Thomas E. Scanlon (D)
 * Pennsylvania's 17th congressional district. J. William Ditter (R), until November 21, 1943
 * Pennsylvania's 18th congressional district. Richard M. Simpson (R)
 * Pennsylvania's 19th congressional district. John C. Kunkel (R)
 * Pennsylvania's 20th congressional district. Leon H. Gavin (R)
 * Pennsylvania's 21st congressional district. Francis E. Walter (D)
 * Pennsylvania's 22nd congressional district. Chester H. Gross (R)
 * Pennsylvania's 23rd congressional district. James E. Van Zandt (R), until September 24, 1943
 * D. Emmert Brumbaugh (R), from November 2, 1943
 * Pennsylvania's 24th congressional district. J. Buell Snyder (D)
 * Pennsylvania's 25th congressional district. Grant Furlong (D)
 * Pennsylvania's 26th congressional district. Louis E. Graham (R)
 * Pennsylvania's 27th congressional district. Harve Tibbott (R)
 * Pennsylvania's 28th congressional district. Augustine B. Kelley (D)
 * Pennsylvania's 29th congressional district. Robert L. Rodgers (R)
 * Pennsylvania's 30th congressional district. Samuel A. Weiss (D)
 * Pennsylvania's 31st congressional district. Herman P. Eberharter (D)
 * Pennsylvania's 32nd congressional district. James A. Wright (D)
 * At-large. William I. Troutman (R), until January 2, 1945

Rhode Island

 * Rhode Island's 1st congressional district. Aime Forand (D)
 * Rhode Island's 2nd congressional district. John E. Fogarty (D), until December 7, 1944

South Carolina

 * South Carolina's 1st congressional district. L. Mendel Rivers (D)
 * South Carolina's 2nd congressional district. Hampton P. Fulmer (D), until October 19, 1944
 * Willa L. Fulmer (D), from November 7, 1944
 * South Carolina's 3rd congressional district. Butler B. Hare (D)
 * South Carolina's 4th congressional district. Joseph R. Bryson (D)
 * South Carolina's 5th congressional district. James P. Richards (D)
 * South Carolina's 6th congressional district. John L. McMillan (D)

South Dakota

 * South Dakota's 1st congressional district. Karl E. Mundt (R)
 * South Dakota's 2nd congressional district. Francis Case (R)

Tennessee

 * Tennessee's 1st congressional district. B. Carroll Reece (R)
 * Tennessee's 2nd congressional district. John Jennings Jr. (R)
 * Tennessee's 3rd congressional district. Estes Kefauver (D)
 * Tennessee's 4th congressional district. Albert Gore Sr. (D), until December 4, 1944
 * Tennessee's 5th congressional district. Jim Nance McCord (D)
 * Tennessee's 6th congressional district. Percy Priest (D)
 * Tennessee's 7th congressional district. W. Wirt Courtney (D)
 * Tennessee's 8th congressional district. Tom J. Murray (D)
 * Tennessee's 9th congressional district. Jere Cooper (D)
 * Tennessee's 10th congressional district. Clifford Davis (D)

Texas

 * Texas's 1st congressional district. Wright Patman (D)
 * Texas's 2nd congressional district. Martin Dies Jr. (D)
 * Texas's 3rd congressional district. Lindley Beckworth (D)
 * Texas's 4th congressional district. Sam Rayburn (D)
 * Texas's 5th congressional district. Hatton W. Sumners (D)
 * Texas's 6th congressional district. Luther Alexander Johnson (D)
 * Texas's 7th congressional district. Nat Patton (D)
 * Texas's 8th congressional district. Albert Thomas (D)
 * Texas's 9th congressional district. Joseph J. Mansfield (D)
 * Texas's 10th congressional district. Lyndon B. Johnson (D)
 * Texas's 11th congressional district. William R. Poage (D)
 * Texas's 12th congressional district. Fritz G. Lanham (D)
 * Texas's 13th congressional district. Ed Gossett (D)
 * Texas's 14th congressional district. Richard M. Kleberg (D)
 * Texas's 15th congressional district. Milton H. West (D)
 * Texas's 16th congressional district. R. Ewing Thomason (D)
 * Texas's 17th congressional district. Sam M. Russell (D)
 * Texas's 18th congressional district. Eugene Worley (D)
 * Texas's 19th congressional district. George H. Mahon (D)
 * Texas's 20th congressional district. Paul J. Kilday (D)
 * Texas's 21st congressional district. O. C. Fisher (D)

Utah

 * Utah's 1st congressional district. Walter K. Granger (D)
 * Utah's 2nd congressional district. J. W. Robinson (D)

Vermont

 * At-large. Charles A. Plumley (R)

Virginia

 * Virginia's 1st congressional district. S. Otis Bland (D)
 * Virginia's 2nd congressional district. Winder R. Harris (D), until September 15, 1944
 * Ralph Hunter Daughton (D), from November 7, 1944
 * Virginia's 3rd congressional district. Dave E. Satterfield Jr. (D)
 * Virginia's 4th congressional district. Patrick H. Drewry (D)
 * Virginia's 5th congressional district. Thomas G. Burch (D)
 * Virginia's 6th congressional district. Clifton A. Woodrum (D)
 * Virginia's 7th congressional district. A. Willis Robertson (D)
 * Virginia's 8th congressional district. Howard W. Smith (D)
 * Virginia's 9th congressional district. John W. Flannagan Jr. (D)

Washington

 * Washington's 1st congressional district. Warren G. Magnuson (D), until December 14, 1944
 * Washington's 2nd congressional district. Henry M. Jackson (D)
 * Washington's 3rd congressional district. Fred B. Norman (R)
 * Washington's 4th congressional district. Hal Holmes (R)
 * Washington's 5th congressional district. Walt Horan (R)
 * Washington's 6th congressional district. John M. Coffee (D)

West Virginia

 * West Virginia's 1st congressional district. A. C. Schiffler (R)
 * West Virginia's 2nd congressional district. Jennings Randolph (D)
 * West Virginia's 3rd congressional district. Edward G. Rohrbough (R)
 * West Virginia's 4th congressional district. Hubert S. Ellis (R)
 * West Virginia's 5th congressional district. John Kee (D)
 * West Virginia's 6th congressional district. Joe L. Smith (D)

Wisconsin

 * Wisconsin's 1st congressional district. Lawrence H. Smith (R)
 * Wisconsin's 2nd congressional district. Harry Sauthoff (P)
 * Wisconsin's 3rd congressional district. William H. Stevenson (R)
 * Wisconsin's 4th congressional district. Thaddeus Wasielewski (D)
 * Wisconsin's 5th congressional district. Howard J. McMurray (D)
 * Wisconsin's 6th congressional district. Frank Bateman Keefe (R)
 * Wisconsin's 7th congressional district. Reid F. Murray (R)
 * Wisconsin's 8th congressional district. LaVern Dilweg (D)
 * Wisconsin's 9th congressional district. Merlin Hull (P)
 * Wisconsin's 10th congressional district. Alvin O'Konski (R)

Wyoming

 * At-large. Frank A. Barrett (R)

Non-voting members

 * Alaska Territory's at-large congressional district. Anthony Dimond (D)
 * Hawaii Territory's at-large congressional district. Joseph Rider Farrington (R)
 * Philippines's at-large congressional district. Joaquín Miguel Elizalde (I), until August 9, 1944
 * ▌Carlos P. Romulo (Lib.), from August 10, 1944
 * Puerto Rico's at-large congressional district. Bolívar Pagán (Socialist)

[[File:78 us house membership.png|thumb|400px|

Senate

 * New Jersey (1)
 * nowrap | William Warren Barbour (R)
 * Died November 22, 1943. Successor was appointed until an election.
 * nowrap | Arthur Walsh (D)
 * November 26, 1943
 * November 26, 1943


 * Indiana (3)
 * nowrap | Frederick Van Nuys (D)
 * Died January 25, 1944. Successor was appointed until an election.
 * nowrap | Samuel D. Jackson (D)
 * January 28, 1944
 * January 28, 1944


 * Massachusetts (2)
 * nowrap | Henry Cabot Lodge Jr. (R)
 * Resigned February 3, 1944, to go on active duty in the US Army. Successor was appointed until a special election.
 * nowrap | Sinclair Weeks (R)
 * February 8, 1944
 * February 8, 1944


 * Oregon (2)
 * nowrap | Charles L. McNary (R)
 * Died February 25, 1944. Successor was appointed and subsequently won special election
 * nowrap | Guy Cordon (R)
 * March 4, 1944
 * March 4, 1944


 * Washington (3)
 * nowrap | Homer Bone (D)
 * Resigned November 13, 1944, to become Judge of the U.S. Court of Appeals for the 9th Circuit. Successor was appointed to finish the term, having just been elected to the next term.
 * nowrap | Warren Magnuson (D)
 * December 14, 1944
 * December 14, 1944


 * Indiana (3)
 * nowrap | Samuel D. Jackson (D)
 * Appointee was not a candidate to finish the term. Successor was elected.
 * nowrap | William E. Jenner (R)
 * November 7, 1944
 * November 7, 1944


 * South Carolina (3)
 * nowrap | Ellison D. Smith (D)
 * Died November 17, 1944.
 * nowrap | Wilton E. Hall (D)
 * November 20, 1944
 * November 20, 1944


 * New Jersey (1)
 * nowrap | Arthur Walsh (D)
 * Appointee was not a candidate to finish the term. Successor was elected.
 * nowrap | Howard Alexander Smith (R)
 * December 7, 1944
 * December 7, 1944


 * Massachusetts (2)
 * nowrap | Sinclair Weeks (R)
 * Appointee was not a candidate to finish the term. Successor was elected. Successor chose not to take the seat until the next Congress, but was nevertheless duly elected and qualified.
 * Leverett Saltonstall (R)
 * January 4, 1945
 * January 4, 1945


 * }

House of Representatives

 * Missouri's 6th congressional district
 * Vacant
 * style="font-size:80%" | Rep. Philip A. Bennett died in previous Congress
 * | Marion T. Bennett (R)
 * January 12, 1943
 * California's 2nd congressional district
 * | Harry L. Englebright (R)
 * style="font-size:80%" | Died May 13, 1943
 * | Clair Engle (D)
 * August 31, 1943
 * Kansas's 2nd congressional district
 * | Ulysses S. Guyer (R)
 * style="font-size:80%" | Died June 5, 1943
 * | Errett P. Scrivner (R)
 * September 14, 1943
 * Oklahoma's 2nd congressional district
 * | John C. Nichols (D)
 * style="font-size:80%" | Resigned July 3, 1943, to become vice-president of Transcontinental and Western Air.
 * | William G. Stigler (D)
 * March 28, 1944
 * New York's 32nd congressional district
 * | Francis D. Culkin (R)
 * style="font-size:80%" | Died August 4, 1943
 * | Hadwen C. Fuller (R)
 * November 2, 1943
 * Pennsylvania's 23rd congressional district
 * | James E. Van Zandt (R)
 * style="font-size:80%" | Resigned September 24, 1943, after being called to active duty in the US Armed Forces.
 * | D. Emmert Brumbaugh (R)
 * November 2, 1943
 * Kentucky's 4th congressional district
 * | Edward W. Creal (D)
 * style="font-size:80%" | Died October 13, 1943
 * | Chester O. Carrier (R)
 * November 30, 1943
 * Pennsylvania's 2nd congressional district
 * | James P. McGranery (D)
 * style="font-size:80%" | Resigned November 17, 1943, after being appointed an Assistant Attorney General
 * | Joseph Marmaduke Pratt (R)
 * January 18, 1944
 * Pennsylvania's 17th congressional district
 * | J. William Ditter (R)
 * style="font-size:80%" | Died November 21, 1943
 * colspan=2 | Vacant until the next Congress
 * Alabama's 3rd congressional district
 * | Henry B. Steagall (D)
 * style="font-size:80%" | Died November 22, 1943
 * | George W. Andrews (D)
 * March 14, 1944
 * Colorado's 1st congressional district
 * | Lawrence Lewis (D)
 * style="font-size:80%" | Died December 9, 1943
 * | Dean M. Gillespie (R)
 * March 7, 1944
 * New York's 21st congressional district
 * | Joseph A. Gavagan (D)
 * style="font-size:80%" | Resigned December 30, 1943, after being elected a justice of the New York Supreme Court
 * | James H. Torrens (D)
 * February 29, 1944
 * Illinois's 19th congressional district
 * | William H. Wheat (R)
 * style="font-size:80%" | Died January 16, 1944
 * | Rolla C. McMillen (R)
 * June 13, 1944
 * Illinois's 7th congressional district
 * | Leonard W. Schuetz (D)
 * style="font-size:80%" | Died February 13, 1944
 * colspan=2 | Vacant until the next Congress
 * New York's 4th congressional district
 * | Thomas H. Cullen (D)
 * style="font-size:80%" | Died March 1, 1944
 * | John J. Rooney (D)
 * June 6, 1944
 * New York's 11th congressional district
 * | James A. O'Leary (D)
 * style="font-size:80%" | Died March 16, 1944
 * | Ellsworth B. Buck (R)
 * June 6, 1944
 * Louisiana's 3rd congressional district
 * | James Domengeaux (D)
 * style="font-size:80%" | Resigned April 15, 1944, to join US Armed Forces
 * | James Domengeaux (D)
 * Re-elected to fill his own vacancy November 7, 1944
 * Minnesota's 9th congressional district
 * | Harold Hagen (FL)
 * style="font-size:80%" | Changed parties April 15, 1944, after Minnesota Farmer–Labor and Democratic parties merged to become the Minnesota Democratic–Farmer–Labor Party (DFL)
 * | Harold Hagen (R)
 * April 15, 1944
 * California's 16th congressional district
 * | Will Rogers Jr. (D)
 * style="font-size:80%" | Resigned May 23, 1944, to enter the US Army
 * colspan=2 | Vacant until the next Congress
 * Philippines's at-large congressional district
 * Joaquín Miguel Elizalde
 * style="font-size:80%" | Resigned August 9, 1944, to become a member of the war cabinet of President Manuel L. Quezon
 * Carlos P. Romulo
 * August 10, 1944
 * Virginia's 2nd congressional district
 * | Winder R. Harris (D)
 * style="font-size:80%" | Resigned September 15, 1944
 * | Ralph Hunter Daughton (D)
 * November 7, 1944
 * Florida's 3rd congressional district
 * | Robert L. F. Sikes (D)
 * style="font-size:80%" | Resigned October 19, 1944, to enter the U.S. Army
 * colspan=2 | Vacant until the next Congress
 * South Carolina's 2nd congressional district
 * | Hampton P. Fulmer (D)
 * style="font-size:80%" | Died October 19, 1944
 * | Willa L. Fulmer (D)
 * November 7, 1944
 * Florida's at-large congressional district
 * | Robert A. Green (D)
 * style="font-size:80%" | Resigned November 25, 1944, to enter the United States Navy
 * colspan=2 | Vacant until the next Congress
 * Tennessee's 4th congressional district
 * | Albert Gore Sr. (D)
 * style="font-size:80%" | Resigned December 4, 1944, to enter the United States Army
 * colspan=2 | Vacant until the next Congress
 * Rhode Island's 2nd congressional district
 * | John E. Fogarty (D)
 * style="font-size:80%" | Resigned December 7, 1944, to enter the United States Navy
 * colspan=2 | Vacant until the next Congress
 * Washington's 1st congressional district
 * | Warren Magnuson (D)
 * style="font-size:80%" | Resigned December 14, 1944, when appointed U.S. Senator
 * colspan=2 | Vacant until the next Congress
 * Pennsylvania's at-large congressional district
 * | William I. Troutman (R)
 * style="font-size:80%" | Resigned January 2, 1945
 * colspan=2 | Vacant until the next Congress
 * }
 * | Willa L. Fulmer (D)
 * November 7, 1944
 * Florida's at-large congressional district
 * | Robert A. Green (D)
 * style="font-size:80%" | Resigned November 25, 1944, to enter the United States Navy
 * colspan=2 | Vacant until the next Congress
 * Tennessee's 4th congressional district
 * | Albert Gore Sr. (D)
 * style="font-size:80%" | Resigned December 4, 1944, to enter the United States Army
 * colspan=2 | Vacant until the next Congress
 * Rhode Island's 2nd congressional district
 * | John E. Fogarty (D)
 * style="font-size:80%" | Resigned December 7, 1944, to enter the United States Navy
 * colspan=2 | Vacant until the next Congress
 * Washington's 1st congressional district
 * | Warren Magnuson (D)
 * style="font-size:80%" | Resigned December 14, 1944, when appointed U.S. Senator
 * colspan=2 | Vacant until the next Congress
 * Pennsylvania's at-large congressional district
 * | William I. Troutman (R)
 * style="font-size:80%" | Resigned January 2, 1945
 * colspan=2 | Vacant until the next Congress
 * }
 * Pennsylvania's at-large congressional district
 * | William I. Troutman (R)
 * style="font-size:80%" | Resigned January 2, 1945
 * colspan=2 | Vacant until the next Congress
 * }

Senate

 * Agriculture and Forestry (Chairman: Ellison D. Smith; Ranking Member: Charles L. McNary then Arthur Capper)
 * Appropriations (Chairman: Carter Glass; Ranking Member: Gerald P. Nye)
 * Audit and Control the Contingent Expenses of the Senate (Chairman: Scott W. Lucas; Ranking Member: Charles W. Tobey)
 * Banking and Currency (Chairman: Robert F. Wagner; Ranking Member: Charles W. Tobey)
 * Campaign Expenditures Investigation, 1944 (Special) (Chairman: Theodore F. Green)
 * Centralization of Heavy Industry in the United States (Select)
 * Civil Service (Chairman: Sheridan Downey; Ranking Member: William Langer)
 * Civil Service Laws (Special)
 * Claims (Chairman: Allen J. Ellender; Ranking Member: Arthur Capper)
 * Commerce (Chairman: Josiah W. Bailey; Ranking Member: Charles L. McNary)
 * District of Columbia (Chairman: Pat McCarran; Ranking Member: Arthur Capper)
 * Education and Labor (Chairman: Elbert D. Thomas; Ranking Member: Robert M. La Follette Jr.)
 * Wartime Health and Education
 * Enrolled Bills (Chairman: Hattie W. Caraway; Ranking Member: Clyde M. Reed)
 * Expenditures in Executive Departments (Chairman: J. Lister Hill; Ranking Member: James J. Davis)
 * Finance (Chairman: Walter F. George; Ranking Member: Robert M. La Follette Jr.)
 * Foreign Relations (Chairman: Tom Connally; Ranking Member: Hiram W. Johnson)
 * Fuel Situation in the Middle West (Special)
 * Gasoline and Fuel Oil Shortages (Special)
 * Immigration (Chairman: Richard B. Russell; Ranking Member: Hiram W. Johnson)
 * Indian Affairs (Chairman: Elmer Thomas; Ranking Member: Robert M. La Follette Jr.)
 * Interoceanic Canals (Chairman: Bennett Champ Clark; Ranking Member: Henry Cabot Lodge Jr.)
 * Interstate Commerce (Chairman: Burton K. Wheeler; Ranking Member: Wallace H. White Jr.)
 * Irrigation and Reclamation (Chairman: John H. Bankhead II; Ranking Member: Charles L. McNary then Hiram W. Johnson)
 * Investigate the National Defense Program (Special)
 * Judiciary (Chairman: Pat McCarran; Ranking Member: Warren R. Austin)
 * Library (Chairman: Alben W. Barkley; Ranking Member: Charles L. McNary then Owen Brewster)
 * Manufactures (Chairman: John H. Overton; Ranking Member: Robert M. La Follette Jr.)
 * Military Affairs (Chairman: Robert R. Reynolds; Ranking Member: Warren R. Austin)
 * Mines and Mining (Chairman: Joseph F. Guffey; Ranking Member: James J. Davis)
 * Naval Affairs (Chairman: David I. Walsh; Ranking Member: James J. Davis)
 * Patents (Chairman: Homer T. Bone; Ranking Member: Wallace H. White)
 * Pensions (Chairman: James M. Tunnell; Ranking Member: Henrik Shipstead)
 * Petroleum Resources (Special)
 * Post Office and Post Roads (Chairman: Kenneth McKellar; Ranking Member: James J. Davis)
 * Post-War Economic Policy and Planning (Special) (Chairman: Walter F. George)
 * Printing (Chairman: Carl Hayden; Ranking Member: William Langer)
 * Privileges and Elections (Chairman: Theodore F. Green; Ranking Member: Warren R. Austin)
 * Public Buildings and Grounds (Chairman: Francis Maloney; Ranking Member: W. Warren Barbour)
 * Public Lands and Surveys (Chairman: Carl A. Hatch; Ranking Member: Gerald P. Nye)
 * Rules (Chairman: Harry F. Byrd; Ranking Member: Arthur H. Vandenberg)
 * Senatorial Campaign Expenditures (Special) (Chairman: Ernest W. McFarland)
 * Small Business Enterprises (Special) (Chairman: James E. Murray)
 * Territories and Insular Affairs (Chairman: Millard E. Tydings; Ranking Member: Gerald P. Nye)
 * Whole
 * Wildlife Resources (Special) (Chairman: Bennett Champ Clark)
 * Wool Production (Special) (Chairman: Joseph C. O'Mahoney)

House of Representatives

 * Accounts (Chairman: John J. Cochran; Ranking Member: James Wolfenden)
 * Agriculture (Chairman: Hampton P. Fulmer; Ranking Member: Clifford R. Hope)
 * Appropriations (Chairman: Clarence Cannon; Ranking Member: John Taber)
 * Banking and Currency (Chairman: Brent Spence; Ranking Member: Jesse P. Wolcott)
 * Census (Chairman: A. Leonard Allen; Ranking Member: J. Roland Kinzer)
 * Civil Service (Chairman: Robert Ramspeck; Ranking Member: Edith Nourse Rogers)
 * Claims (Chairman: Dan R. McGehee; Ranking Member: J. Parnell Thomas)
 * Coinage, Weights and Measures (Chairman: Andrew Somers; Ranking Member: Chauncey W. Reed)
 * Conservation of Wildlife Resources (Select) (Chairman: A. Willis Robertson)
 * Disposition of Executive Papers (Chairman: Alfred J. Elliott; Ranking Member: Bertrand W. Gearhart)
 * District of Columbia (Chairman: Jennings Randolph; Ranking Member: Everett M. Dirksen)
 * Education (Chairman: Graham A. Barden; Ranking Member: George A. Dondero)
 * Election of the President, Vice President and Representatives in Congress (Chairman: Eugene Worley; Ranking Member: Ralph A. Gamble)
 * Elections No.#1 (Chairman: C. Jasper Bell; Ranking Member: Clarence E. Hancock)
 * Elections No.#2 (Chairman: Ed Gossett; Ranking Member: Francis D. Culkin then Stephen A. Day)
 * Elections No.#3 (Chairman: Hugh Peterson; Ranking Member: Charles A. Plumley)
 * Enrolled Bills (Chairman: Arthur G. Klein; Ranking Member: Charles Aubrey Eaton)
 * Expenditures in the Executive Departments (Chairman: Carter Manasco; Ranking Member: Charles L. Gifford)
 * Flood Control (Chairman: William M. Whittington; Ranking Member: Harry Lane Englebright then Charles R. Clason)
 * Foreign Affairs (Chairman: Sol Bloom; Ranking Member: Charles Aubrey Eaton)
 * Immigration and Naturalization (Chairman: Samuel Dickstein; Ranking Member: Noah M. Mason)
 * Indian Affairs (Chairman: James F. O'Connor; Ranking Member: Fred C. Gilchrist)
 * Insular Affairs (Chairman: C. Jasper Bell; Ranking Member: Richard J. Welch)
 * Interstate and Foreign Commerce (Chairman: Clarence F. Lea; Ranking Member: Charles A. Wolverton)
 * Labor (Chairman: Mary Teresa Norton; Ranking Member: Richard J. Welch)
 * Memorials (Chairman: John R. Murdock; Ranking Member: Allen T. Treadway)
 * Merchant Marine and Fisheries (Chairman: S. Otis Bland; Ranking Member: Richard J. Welch)
 * Military Affairs (Chairman: Andrew J. May; Ranking Member: Walter G. Andrews)
 * Invalid Pensions (Chairman: John Lesinski; Ranking Member: Robert A. Grant)
 * Investigate Acts of Executive Agencies Beyond their Scope of Authority (Select) (Chairman: N/A)
 * Investigate the Federal Communications Commission (Select) (Chairman: Edward E. Cox)
 * Irrigation and Reclamation (Chairman: Compton I. White; Ranking Member: Dewey Jackson Short)
 * Judiciary (Chairman: Hatton W. Sumners; Ranking Member: Ulysses S. Guyer then Clarence E. Hancock)fairs]] (Chairman: Andrew J. May; Ranking Member: Walter G. Andrews)
 * Mines and Mining (Chairman: Joe L. Smith; Ranking Member: Harry Lane Englebright then John M. Robsion)
 * Investigate the Seizure of Montgomery Ward and Company (Select) (Chairman: N/A)
 * Naval Affairs (Chairman: Carl Vinson; Ranking Member: Melvin J. Maas)
 * Patents (Chairman: Frank W. Boykin; Ranking Member: Fred A. Hartley Jr.)
 * Pensions (Chairman: Charles A. Buckley; Ranking Member: Fred J. Douglas)
 * Post Office and Post Roads (Chairman: Thomas G. Burch; Ranking Member: Fred A. Hartley Jr.)
 * Post-War Military Policy (Select) (Chairman: Clifton A. Woodrum)
 * Post-War Economic Policy and Planning (Special) (Chairman: N/A; Ranking Member: N/A)
 * Printing (Chairman: Pete Jarman; Ranking Member: N/A)
 * Public Buildings and Grounds (Chairman: Fritz G. Lanham; Ranking Member: Pehr G. Holmes)
 * Public Lands (Chairman: J. Hardin Peterson; Ranking Member: Harry Lane Englebright)
 * Revision of Laws (Chairman: Eugene J. Keogh; Ranking Member: Earl C. Michener)
 * Rivers and Harbors (Chairman: Joseph J. Mansfield; Ranking Member: Albert E. Carter)
 * Roads (Chairman: J.W. Robinson; Ranking Member: Jesse P. Wolcott)
 * Rules (Chairman: Adolph J. Sabath; Ranking Member: Hamilton Fish III)
 * Small Business (Select) (Chairman: Wright Patman; Ranking Member: Usher L. Burdick)
 * Standards of Official Conduct
 * Territories (Chairman: Robert A. Green; Ranking Member: Usher L. Burdick)
 * War Claims (Chairman: Edward J. Hart; Ranking Member: Clare E. Hoffman)
 * Ways and Means (Chairman: Robert L. Doughton; Ranking Member: Allen T. Treadway)
 * World War Veterans' Legislation (Chairman: John E. Rankin; Ranking Member: Edith Nourse Rogers)
 * Whole

Joint committees

 * Commemorate the Centennial of the Telegraph
 * Conditions of Indian Tribes (Special)
 * Disposition of (Useless) Executive Papers
 * The Library (Chairman: Sen. Alben W. Barkley)
 * Reduction of Nonessential Federal Expenditures (Chairman: Sen. Harry F. Byrd; Vice Chairman: Rep. Robert L. Doughton)
 * Organization of Congress
 * Printing (Chairman: Sen. Carl Hayden; Vice Chairman: Rep. Pete Jarman)
 * Selective Service Deferments
 * Taxation (Chairman: Sen. Walter F. George; Vice Chairman: Rep. Robert L. Doughton)

Caucuses

 * Democratic (House)
 * Democratic (Senate)

Legislative branch agency directors

 * Architect of the Capitol: David Lynn
 * Attending Physician of the United States Congress: George Calver
 * Comptroller General of the United States: Lindsay C. Warren
 * Librarian of Congress: Archibald MacLeish, until 1944
 * Public Printer of the United States: Augustus E. Giegengack

Senate

 * Chaplain: Frederick Brown Harris (Methodist)
 * Parliamentarian: Charles Watkins
 * Secretary: Edwin A. Halsey
 * Librarian: Ruskin McArdle
 * Secretary for the Majority: Leslie Biffle
 * Secretary for the Minority: Carl A. Loeffler
 * Sergeant at Arms: Chesley W. Jurney, until January 31, 1943
 * Wall Doxey, from February 1, 1943

House of Representatives

 * Chaplain: James Shera Montgomery (Methodist)
 * Clerk: South Trimble
 * Doorkeeper: Joseph J. Sinnott, until January 27, 1943
 * Ralph R. Roberts, from February 5, 1943
 * Parliamentarian: Lewis Deschler
 * Postmaster: Finis E. Scott
 * Reading Clerks: George J. Maurer (D) and Alney E. Chaffee (R)
 * Sergeant at Arms: Kenneth Romney