29th United States Congress

The 29th United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1845, to March 4, 1847, during the first two years of James Polk's presidency. The apportionment of seats in the House of Representatives was based on the 1840 United States census. Both chambers had a Democratic majority.

Major events

 * March 4, 1845: James K. Polk became President of the United States
 * October 10, 1845: The Naval School (later renamed the United States Naval Academy) opened in Annapolis, Maryland
 * December 2, 1845: President Polk announced to Congress that the Monroe Doctrine should be strictly enforced and that the United States should aggressively expand into the West.
 * April 25, 1846: Open conflict over border disputes of Texas's boundaries began the Mexican–American War

Major legislation

 * May 13, 1846: Mexican–American War declared, ch. 16,
 * July 9, 1846: District of Columbia retrocession, ch. 35,
 * July 30, 1846: Walker tariff, ch. 74,

Treaties

 * June 15, 1846: Oregon Treaty established the 49th parallel as the border between the United States and Canada, from the Rocky Mountains to the Strait of Juan de Fuca
 * January 13, 1847: Treaty of Cahuenga ended the fighting in the Mexican–American War in California (not a formal treaty between nations but an informal agreement between rival military forces)

States admitted

 * December 29, 1845: Texas admitted as the 28th state
 * December 28, 1846: Iowa admitted as the 29th state

Senate
During this congress, two Senate seats were added for each of the new states of Texas and Iowa.

House of Representatives
During this congress, two House seats were added for each of the new states of Texas and Iowa.

Senate

 * President: George M. Dallas (D)
 * President pro tempore: Willie P. Mangum (W), until March 4, 1845
 * Ambrose Hundley Sevier (D), only on December 27, 1845
 * David R. Atchison (D), from August 8, 1846

House of Representatives

 * Speaker: John W. Davis (D)

Members
This list is arranged by chamber, then by state. Senators are listed by class and representatives are listed by district.
 * Skip to House of Representatives, below

Senate
Senators were elected by the state legislatures 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 1 meant their term began with this Congress, facing re-election in 1850; Class 2 meant their term ended with this Congress, facing re-election in 1846; and Class 3 meant their term began in the last Congress, facing re-election in 1848.

Alabama

 * 2. Dixon H. Lewis (D)
 * 3. Arthur P. Bagby (D)

Arkansas

 * 2. Chester Ashley (D)
 * 3. Ambrose H. Sevier (D)

Connecticut

 * 1. Jabez W. Huntington (W)
 * 3. John M. Niles (D)

Delaware

 * 1. John M. Clayton (W)
 * 2. Thomas Clayton (W)

Florida

 * 1. David Levy Yulee (D), from July 1, 1845
 * 3. James Westcott (D), from July 1, 1845

Georgia

 * 2. John M. Berrien (W), until May, 1845; from November 13, 1845
 * 3. Walter T. Colquitt (D)

Illinois

 * 2. James Semple (D)
 * 3. Sidney Breese (D)

Indiana

 * 1. Jesse D. Bright (D)
 * 3. Edward A. Hannegan (D)

Iowa

 * 2. Vacant after being admitted to the Union December 28, 1846
 * 3. Vacant after being admitted to the Union December 28, 1846

Kentucky

 * 2. James T. Morehead (W)
 * 3. John J. Crittenden (W)

Louisiana

 * 2. Alexander Barrow (W), until December 29, 1846
 * Pierre Soulé (D), from January 21, 1847
 * 3. Henry Johnson (W)

Maine

 * 1. John Fairfield (D)
 * 2. George Evans (W)

Maryland

 * 1. Reverdy Johnson (W)
 * 3. James Pearce (W)

Massachusetts

 * 1. Daniel Webster (W)
 * 2. Isaac C. Bates (W), until March 16, 1845
 * John Davis (W), from March 24, 1845

Michigan

 * 1. Lewis Cass (D)
 * 2. William Woodbridge (W)

Mississippi

 * 1. Jesse Speight (D)
 * 2. Robert J. Walker (D), until March 5, 1845
 * Joseph W. Chalmers (D), from November 3, 1845

Missouri

 * 1. Thomas H. Benton (D)
 * 3. David R. Atchison (D)

New Hampshire

 * 2. Levi Woodbury (D), until September 20, 1845
 * Benning W. Jenness (D), from December 1, 1845, until June 13, 1846
 * Joseph Cilley (L), from June 13, 1846
 * 3. Charles G. Atherton (D)

New Jersey

 * 1. William L. Dayton (W)
 * 2. Jacob W. Miller (W)

New York

 * 1. Daniel S. Dickinson (D)
 * 3. John A. Dix (D)

North Carolina

 * 2. Willie P. Mangum (W)
 * 3. William H. Haywood Jr. (D), until July 25, 1846
 * George E. Badger (W), from November 26, 1846

Ohio

 * 1. Thomas Corwin (W)
 * 3. William Allen (D)

Pennsylvania

 * 1. Daniel Sturgeon (D)
 * 3. James Buchanan (D), until March 5, 1845
 * Simon Cameron (D), from March 13, 1845

Rhode Island

 * 1. Albert C. Greene (W)
 * 2. James F. Simmons (W)

South Carolina

 * 2. John C. Calhoun (D), from November 26, 1845
 * 3. George McDuffie (D), until August 17, 1846
 * Andrew Butler (D), from December 4, 1846

Tennessee

 * 1. Hopkins L. Turney (D)
 * 2. Spencer Jarnagin (W)

Texas

 * 1. Thomas J. Rusk (D), from February 21, 1846 (newly admitted state)
 * 2. Samuel Houston (D), from February 21, 1846 (newly admitted state)

Vermont

 * 1. Samuel S. Phelps (W)
 * 3. William Upham (W)

Virginia

 * 1. Isaac S. Pennybacker (D), December 3, 1845 – January 12, 1847
 * James M. Mason (D), from January 21, 1847
 * 2. William S. Archer (W)



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

Alabama

 * Alabama's 1st congressional district. Edmund S. Dargan (D)
 * Alabama's 2nd congressional district. Henry W. Hilliard (W)
 * Alabama's 3rd congressional district. William L. Yancey (D), until September 1, 1846
 * James L. Cottrell (D), from December 7, 1846
 * Alabama's 4th congressional district. William W. Payne (D)
 * Alabama's 5th congressional district. George S. Houston (D)
 * Alabama's 6th congressional district. Reuben Chapman (D)
 * Alabama's 7th congressional district. Felix G. McConnell (D), until September 10, 1846
 * Franklin W. Bowdon (D), from December 7, 1846

Arkansas

 * At-large. Archibald Yell (D), until July 1, 1846
 * Thomas W. Newton (W), from February 6, 1847

Connecticut

 * Connecticut's 1st congressional district. James Dixon (W)
 * Connecticut's 2nd congressional district. Samuel D. Hubbard (W)
 * Connecticut's 3rd congressional district. John A. Rockwell (W)
 * Connecticut's 4th congressional district. Truman Smith (W)

Delaware

 * At-large. John W. Houston (W)

Florida

 * At-large. Edward C. Cabell (W), from October 6, 1845, until January 24, 1846
 * William H. Brockenbrough (D), from January 24, 1846

Georgia

 * Georgia's 1st congressional district. Thomas Butler King (W)
 * Georgia's 2nd congressional district. Seaborn Jones (D)
 * Georgia's 3rd congressional district. George W. B. Towns (D), from January 5, 1846
 * Georgia's 4th congressional district. Hugh A. Haralson (D)
 * Georgia's 5th congressional district. John H. Lumpkin (D)
 * Georgia's 6th congressional district. Howell Cobb (D)
 * Georgia's 7th congressional district. Alexander H. Stephens (W)
 * Georgia's 8th congressional district. Robert A. Toombs (W)

Illinois

 * Illinois's 1st congressional district. Robert Smith (D)
 * Illinois's 2nd congressional district. John A. McClernand (D)
 * Illinois's 3rd congressional district. Orlando B. Ficklin (D)
 * Illinois's 4th congressional district. John Wentworth (D)
 * Illinois's 5th congressional district. Stephen A. Douglas (D), until March 3, 1847
 * Illinois's 6th congressional district. Joseph P. Hoge (D)
 * Illinois's 7th congressional district. Edward D. Baker (W), until January 15, 1847
 * John Henry (W), from February 5, 1847

Indiana

 * Indiana's 1st congressional district. Robert D. Owen (D)
 * Indiana's 2nd congressional district. Thomas J. Henley (D)
 * Indiana's 3rd congressional district. Thomas Smith (D)
 * Indiana's 4th congressional district. Caleb B. Smith (W)
 * Indiana's 5th congressional district. William W. Wick (D)
 * Indiana's 6th congressional district. John W. Davis (D)
 * Indiana's 7th congressional district. Edward W. McGaughey (W)
 * Indiana's 8th congressional district. John Pettit (D)
 * Indiana's 9th congressional district. Charles W. Cathcart (D)
 * Indiana's 10th congressional district. Andrew Kennedy (D)

Iowa

 * At-large. S. Clifton Hastings (D), from December 28, 1846 (newly admitted state)
 * At-large. Shepherd Leffler (D), from December 28, 1846 (newly admitted state)

Kentucky

 * Kentucky's 1st congressional district. Linn Boyd (D)
 * Kentucky's 2nd congressional district. John H. McHenry (W)
 * Kentucky's 3rd congressional district. Henry Grider (W)
 * Kentucky's 4th congressional district. Joshua F. Bell (W)
 * Kentucky's 5th congressional district. Bryan R. Young (W)
 * Kentucky's 6th congressional district. John P. Martin (D)
 * Kentucky's 7th congressional district. William P. Thomasson (W)
 * Kentucky's 8th congressional district. Garrett Davis (W)
 * Kentucky's 9th congressional district. Andrew A. Trumbo (W)
 * Kentucky's 10th congressional district. John W. Tibbatts (D)

Louisiana

 * Louisiana's 1st congressional district. John Slidell (D), until November 10, 1845
 * Emile La Sére (D), from January 29, 1846
 * Louisiana's 2nd congressional district. Bannon G. Thibodeaux (W)
 * Louisiana's 3rd congressional district. John H. Harmanson (D)
 * Louisiana's 4th congressional district. Isaac E. Morse (D)

Maine

 * Maine's 1st congressional district. John F. Scamman (D)
 * Maine's 2nd congressional district. Robert P. Dunlap (D)
 * Maine's 3rd congressional district. Luther Severance (W)
 * Maine's 4th congressional district. John D. McCrate (D)
 * Maine's 5th congressional district. Cullen Sawtelle (D)
 * Maine's 6th congressional district. Hannibal Hamlin (D)
 * Maine's 7th congressional district. Hezekiah Williams (D)

Maryland

 * Maryland's 1st congressional district. John G. Chapman (W)
 * Maryland's 2nd congressional district. Thomas J. Perry (D)
 * Maryland's 3rd congressional district. Thomas W. Ligon (D)
 * Maryland's 4th congressional district. William F. Giles (D)
 * Maryland's 5th congressional district. Albert Constable (D)
 * Maryland's 6th congressional district. Edward H. C. Long (W)

Massachusetts

 * Massachusetts's 1st congressional district. Robert C. Winthrop (W)
 * Massachusetts's 2nd congressional district. Daniel P. King (W)
 * Massachusetts's 3rd congressional district. Amos Abbott (W)
 * Massachusetts's 4th congressional district. Benjamin Thompson (W)
 * Massachusetts's 5th congressional district. Charles Hudson (W)
 * Massachusetts's 6th congressional district. George Ashmun (W)
 * Massachusetts's 7th congressional district. Julius Rockwell (W)
 * Massachusetts's 8th congressional district. John Quincy Adams (W)
 * Massachusetts's 9th congressional district. Artemas Hale (W)
 * Massachusetts's 10th congressional district. Joseph Grinnell (W)

Michigan

 * Michigan's 1st congressional district. Robert McClelland (D)
 * Michigan's 2nd congressional district. John S. Chipman (D)
 * Michigan's 3rd congressional district. James B. Hunt (D)

Mississippi

 * At-large. Stephen Adams (D)
 * At-large. Jefferson Davis (D), until October 28, 1846
 * Henry T. Ellett (D), from January 26, 1847
 * At-large. Robert W. Roberts (D)
 * At-large. Jacob Thompson (D)

Missouri

 * At-large. James B. Bowlin (D)
 * At-large. John S. Phelps (D)
 * At-large. Sterling Price (D), until August 12, 1846
 * William McDaniel (D), from December 7, 1846
 * At-large. James H. Relfe (D)
 * At-large. Leonard H. Sims (D)

New Hampshire

 * At-large. James H. Johnson (D)
 * At-large. Mace Moulton (D)
 * At-large. Moses Norris Jr. (D)
 * At-large. Vacant

New Jersey

 * New Jersey's 1st congressional district. James G. Hampton (W)
 * New Jersey's 2nd congressional district. Samuel G. Wright (W), until July 30, 1845
 * George Sykes (D), from November 4, 1845
 * New Jersey's 3rd congressional district. John Runk (W)
 * New Jersey's 4th congressional district. Joseph E. Edsall (D)
 * New Jersey's 5th congressional district. William Wright (W)

New York

 * New York's 1st congressional district. John W. Lawrence (D)
 * New York's 2nd congressional district. Henry J. Seaman (A)
 * New York's 3rd congressional district. William S. Miller (A)
 * New York's 4th congressional district. William B. Maclay (D)
 * New York's 5th congressional district. Thomas M. Woodruff (A)
 * New York's 6th congressional district. William W. Campbell (A)
 * New York's 7th congressional district. Joseph H. Anderson (D)
 * New York's 8th congressional district. William W. Woodworth (D)
 * New York's 9th congressional district. Archibald C. Niven (D)
 * New York's 10th congressional district. Samuel Gordon (D)
 * New York's 11th congressional district. John F. Collin (D)
 * New York's 12th congressional district. Richard P. Herrick (W), until June 20, 1846
 * Thomas C. Ripley (W), from December 17, 1846
 * New York's 13th congressional district. Bradford R. Wood (D)
 * New York's 14th congressional district. Erastus D. Culver (W)
 * New York's 15th congressional district. Joseph Russell (D)
 * New York's 16th congressional district. Hugh White (W)
 * New York's 17th congressional district. Charles S. Benton (D)
 * New York's 18th congressional district. Preston King (D)
 * New York's 19th congressional district. Orville Hungerford (D)
 * New York's 20th congressional district. Timothy Jenkins (D)
 * New York's 21st congressional district. Charles Goodyear (D)
 * New York's 22nd congressional district. Stephen Strong (D)
 * New York's 23rd congressional district. William J. Hough (D)
 * New York's 24th congressional district. Horace Wheaton (D)
 * New York's 25th congressional district. George O. Rathbun (D)
 * New York's 26th congressional district. Samuel S. Ellsworth (D)
 * New York's 27th congressional district. John De Mott (D)
 * New York's 28th congressional district. Elias B. Holmes (W)
 * New York's 29th congressional district. Charles H. Carroll (W)
 * New York's 30th congressional district. Martin Grover (D)
 * New York's 31st congressional district. Abner Lewis (W)
 * New York's 32nd congressional district. William A. Moseley (W)
 * New York's 33rd congressional district. Albert Smith (W)
 * New York's 34th congressional district. Washington Hunt (W)

North Carolina

 * North Carolina's 1st congressional district. James Graham (W)
 * North Carolina's 2nd congressional district. Daniel M. Barringer (W)
 * North Carolina's 3rd congressional district. David S. Reid (D)
 * North Carolina's 4th congressional district. Alfred Dockery (W)
 * North Carolina's 5th congressional district. James C. Dobbin (D)
 * North Carolina's 6th congressional district. James I. McKay (D)
 * North Carolina's 7th congressional district. John R. J. Daniel (D)
 * North Carolina's 8th congressional district. Henry S. Clark (D)
 * North Carolina's 9th congressional district. Asa Biggs (D)

Ohio

 * Ohio's 1st congressional district. James J. Faran (D)
 * Ohio's 2nd congressional district. Francis A. Cunningham (D)
 * Ohio's 3rd congressional district. Robert C. Schenck (W)
 * Ohio's 4th congressional district. Joseph Vance (W)
 * Ohio's 5th congressional district. William Sawyer (D)
 * Ohio's 6th congressional district. Henry St. John (D)
 * Ohio's 7th congressional district. Joseph J. McDowell (D)
 * Ohio's 8th congressional district. Allen G. Thurman (D)
 * Ohio's 9th congressional district. Augustus L. Perrill (D)
 * Ohio's 10th congressional district. Columbus Delano (W)
 * Ohio's 11th congressional district. Jacob Brinkerhoff (D)
 * Ohio's 12th congressional district. Samuel F. Vinton (W)
 * Ohio's 13th congressional district. Isaac Parrish (D)
 * Ohio's 14th congressional district. Alexander Harper (W)
 * Ohio's 15th congressional district. Joseph Morris (D)
 * Ohio's 16th congressional district. John D. Cummins (D)
 * Ohio's 17th congressional district. George Fries (D)
 * Ohio's 18th congressional district. David A. Starkweather (D)
 * Ohio's 19th congressional district. Daniel R. Tilden (W)
 * Ohio's 20th congressional district. Joshua R. Giddings (W)
 * Ohio's 21st congressional district. Joseph M. Root (W)

Pennsylvania

 * Pennsylvania's 1st congressional district. Lewis C. Levin (A)
 * Pennsylvania's 2nd congressional district. Joseph R. Ingersoll (W)
 * Pennsylvania's 3rd congressional district. John H. Campbell (A)
 * Pennsylvania's 4th congressional district. Charles J. Ingersoll (D)
 * Pennsylvania's 5th congressional district. Jacob S. Yost (D)
 * Pennsylvania's 6th congressional district. Jacob Erdman (D)
 * Pennsylvania's 7th congressional district. Abraham R. McIlvaine (W)
 * Pennsylvania's 8th congressional district. John Strohm (W)
 * Pennsylvania's 9th congressional district. John Ritter (D)
 * Pennsylvania's 10th congressional district. Richard Brodhead (D)
 * Pennsylvania's 11th congressional district. Owen D. Leib (D)
 * Pennsylvania's 12th congressional district. David Wilmot (D)
 * Pennsylvania's 13th congressional district. James Pollock (W)
 * Pennsylvania's 14th congressional district. Alexander Ramsey (W)
 * Pennsylvania's 15th congressional district. Moses McClean (D)
 * Pennsylvania's 16th congressional district. James Black (D)
 * Pennsylvania's 17th congressional district. John Blanchard (W)
 * Pennsylvania's 18th congressional district. Andrew Stewart (W)
 * Pennsylvania's 19th congressional district. Henry D. Foster (D)
 * Pennsylvania's 20th congressional district. John H. Ewing (W)
 * Pennsylvania's 21st congressional district. Cornelius Darragh (W)
 * Pennsylvania's 22nd congressional district. William S. Garvin (D)
 * Pennsylvania's 23rd congressional district. James Thompson (D)
 * Pennsylvania's 24th congressional district. Joseph Buffington (W)

Rhode Island

 * Rhode Island's 1st congressional district. Henry Y. Cranston (W)
 * Rhode Island's 2nd congressional district. Lemuel H. Arnold (W)

South Carolina

 * South Carolina's 1st congressional district. James A. Black (D)
 * South Carolina's 2nd congressional district. Richard F. Simpson (D)
 * South Carolina's 3rd congressional district. Joseph A. Woodward (D)
 * South Carolina's 4th congressional district. Alexander D. Sims (D)
 * South Carolina's 5th congressional district. Armistead Burt (D)
 * South Carolina's 6th congressional district. Isaac E. Holmes (D)
 * South Carolina's 7th congressional district. Robert Rhett (D)

Tennessee

 * Tennessee's 1st congressional district. Andrew Johnson (D)
 * Tennessee's 2nd congressional district. William M. Cocke (W)
 * Tennessee's 3rd congressional district. John H. Crozier (W)
 * Tennessee's 4th congressional district. Alvan Cullom (D)
 * Tennessee's 5th congressional district. George W. Jones (D)
 * Tennessee's 6th congressional district. Barclay Martin (D)
 * Tennessee's 7th congressional district. Meredith P. Gentry (W)
 * Tennessee's 8th congressional district. Joseph H. Peyton (W), until November 11, 1845
 * Edwin H. Ewing (W), from January 2, 1846
 * Tennessee's 9th congressional district. Lucien B. Chase (D)
 * Tennessee's 10th congressional district. Frederick P. Stanton (D)
 * Tennessee's 11th congressional district. Milton Brown (W)

Texas

 * Texas's 1st congressional district. David S. Kaufman (D), from March 30, 1846 (newly admitted state)
 * Texas's 2nd congressional district. Timothy Pilsbury (D), from March 30, 1846 (newly admitted state)

Vermont

 * Vermont's 1st congressional district. Solomon Foot (W)
 * Vermont's 2nd congressional district. Jacob Collamer (W)
 * Vermont's 3rd congressional district. George P. Marsh (W)
 * Vermont's 4th congressional district. Paul Dillingham Jr. (D)

Virginia

 * Virginia's 1st congressional district. Archibald Atkinson (D)
 * Virginia's 2nd congressional district. George C. Dromgoole (D)
 * Virginia's 3rd congressional district. William M. Tredway (D)
 * Virginia's 4th congressional district. Edmund W. Hubard (D)
 * Virginia's 5th congressional district. Shelton F. Leake (D)
 * Virginia's 6th congressional district. James A. Seddon (D)
 * Virginia's 7th congressional district. Thomas H. Bayly (D)
 * Virginia's 8th congressional district. Robert M. T. Hunter (D)
 * Virginia's 9th congressional district. John S. Pendleton (W)
 * Virginia's 10th congressional district. Henry Bedinger (D)
 * Virginia's 11th congressional district. William Taylor (D), until January 17, 1846
 * James McDowell (D), from March 6, 1846
 * Virginia's 12th congressional district. Augustus A. Chapman (D)
 * Virginia's 13th congressional district. George W. Hopkins (D)
 * Virginia's 14th congressional district. Joseph Johnson (D)
 * Virginia's 15th congressional district. William G. Brown Sr. (D)

Non-voting members

 * At-large. Augustus C. Dodge (D), until December 28, 1846
 * At-large. Morgan L. Martin (D)

[[File:29 us house membership.png|thumb|400px|

Changes in membership
The count below reflects changes from the beginning of the first session of this Congress.

Senate

 * Replacements: 8
 * Democrats (D): no net change
 * Whigs (W): no net change
 * Deaths: 3
 * Resignations: 6
 * Interim appointments: 1
 * Seats of newly admitted states: 4
 * Total seats with changes: 14


 * Florida (1)
 * Vacant
 * Florida admitted to the Union at end of previous congress
 * | David L. Yulee (D)
 * Elected July 1, 1845
 * Elected July 1, 1845


 * Florida (3)
 * Vacant
 * Florida admitted to the Union at end of previous congress
 * | James Westcott (D)
 * Elected July 1, 1845
 * Elected July 1, 1845


 * South Carolina (2)
 * Vacant
 * Senator Daniel E. Huger resigned in previous congress. Successor elected November 26, 1845.
 * | John C. Calhoun (D)
 * Elected November 26, 1845
 * Elected November 26, 1845


 * Virginia (1)
 * Vacant
 * Failure to elect
 * | Isaac S. Pennybacker (D)
 * Elected December 3, 1845
 * Elected December 3, 1845


 * Mississippi (2)
 * | Robert J. Walker (D)
 * Resigned March 5, 1845, after being appointed U.S. Secretary of the Treasury. Successor appointed November 3, 1845. Appointee was later elected on an unknown date.
 * | Joseph W. Chalmers (D)
 * Appointed November 3, 1845
 * Appointed November 3, 1845


 * Pennsylvania (3)
 * | James Buchanan (D)
 * Resigned March 5, 1845, after being appointed U.S. Secretary of State
 * | Simon Cameron (D)
 * Elected March 13, 1845
 * Elected March 13, 1845


 * Massachusetts (2)
 * | Isaac C. Bates (W)
 * Died March 16, 1845
 * | John Davis (W)
 * Elected March 24, 1845
 * Elected March 24, 1845


 * Georgia (2)
 * | John M. Berrien (W)
 * Resigned May, 1845 when appointed to the Georgia Supreme Court
 * | John M. Berrien (W)
 * Elected November 13, 1845
 * Elected November 13, 1845


 * New Hampshire (2)
 * | Levi Woodbury (D)
 * Resigned November 20, 1845, to become Associate Justice of the U.S. Supreme Court
 * | Benning W. Jenness (D)
 * Appointed December 1, 1845
 * Appointed December 1, 1845


 * Texas (1)
 * colspan=2 | Texas admitted to the Union December 29, 1845, and remained vacant until February 21, 1846
 * | Thomas J. Rusk (D)
 * Elected February 21, 1846
 * Elected February 21, 1846


 * Texas (2)
 * colspan=2 | Texas admitted to the Union December 29, 1845, and remained vacant until February 21, 1846
 * | Sam Houston (D)
 * Elected February 21, 1846
 * Elected February 21, 1846


 * New Hampshire (2)
 * | Benning W. Jenness (D)
 * Lost election to finish the term. Winner elected June 13, 1846.
 * | Joseph Cilley (L)
 * Elected June 13, 1846
 * Elected June 13, 1846


 * North Carolina (3)
 * | William H. Haywood Jr. (D)
 * Resigned July 25, 1846, after having refused to be instructed by the North Carolina state legislature on a tariff question
 * | George E. Badger (W)
 * Elected November 25, 1846
 * Elected November 25, 1846


 * South Carolina (3)
 * | George McDuffie (D)
 * Resigned August 17, 1846. Successor appointed December 4, 1846, and subsequently elected to finish the term.
 * | Andrew Butler (D)
 * Seated December 4, 1846
 * Seated December 4, 1846


 * Iowa (2)
 * colspan=2 | Iowa admitted to the Union December 28, 1846
 * Vacant
 * Not filled this term
 * Not filled this term


 * Iowa (3)
 * colspan=2 | Iowa admitted to the Union December 28, 1846
 * Vacant
 * Not filled this term
 * Not filled this term


 * Louisiana (2)
 * | Alexander Barrow (W)
 * Died December 29, 1846
 * | Pierre Soulé (D)
 * Elected January 21, 1847
 * Elected January 21, 1847


 * Virginia (1)
 * | Isaac S. Pennybacker (D)
 * Died January 12, 1847
 * | James M. Mason (D)
 * Elected January 21, 1847
 * }
 * }

House of Representatives

 * Replacements: 12
 * Democrats (D): 1 seat net gain
 * Whigs (W): 1 seat net loss
 * Deaths: 5
 * Resignations: 6
 * Contested election: 1
 * Seats of newly admitted states: 4
 * Total seats with changes: 17


 * Florida's at-large congressional district
 * Vacant
 * style="font-size:80%" | Florida admitted to the Union at end of previous congress
 * | Edward C. Cabell (W)
 * Seated October 6, 1845
 * Georgia's 3rd congressional district
 * Vacant
 * style="font-size:80%" | Rep-elect Washington Poe declined the seat
 * | George W. Towns (D)
 * Seated January 5, 1846
 * Texas's 1st congressional district
 * colspan=2 style="font-size:80%" | Texas admitted into the Union December 29, 1845, and seat remained vacant until March 30, 1846
 * | David S. Kaufman (D)
 * Seated March 30, 1846
 * Texas's 2nd congressional district
 * colspan=2 style="font-size:80%" | Texas admitted into the Union December 29, 1845, and seat remained vacant until March 30, 1846
 * | Timothy Pilsbury (D)
 * Seated March 30, 1846
 * New Jersey's 2nd congressional district
 * | Samuel G. Wright (W)
 * style="font-size:80%" | Died July 30, 1845
 * | George Sykes (D)
 * Seated November 4, 1845
 * Louisiana's 1st congressional district
 * | John Slidell (D)
 * style="font-size:80%" | Resigned November 10, 1845, after being appointed Minister to Mexico, but government refused to accept him
 * | Emile La Sére (D)
 * Seated January 29, 1846
 * Tennessee's 8th congressional district
 * | Joseph H. Peyton (W)
 * style="font-size:80%" | Died November 11, 1845
 * | Edwin H. Ewing (W)
 * Seated January 2, 1846
 * Virginia's 11th congressional district
 * | William Taylor (D)
 * style="font-size:80%" | Died January 17, 1846
 * | James McDowell (D)
 * Seated March 6, 1846
 * Florida's at-large congressional district
 * | Edward C. Cabell (W)
 * style="font-size:80%" | Lost contested election January 24, 1846
 * | William H. Brockenbrough (D)
 * Seated January 24, 1846
 * Mississippi's at-large congressional district
 * | Jefferson Davis (D)
 * style="font-size:80%" | Resigned some time in June, 1846 in order to take part in the Mexican War
 * | Henry T. Ellett (D)
 * Seated January 26, 1847
 * New York's 12th congressional district
 * | Richard P. Herrick (W)
 * style="font-size:80%" | Died June 20, 1846
 * | Thomas C. Ripley (W)
 * Seated December 17, 1846
 * Arkansas's at-large congressional district
 * | Archibald Yell (D)
 * style="font-size:80%" | Resigned July 1, 1846, in order to take part in the Mexican War
 * | Thomas W. Newton (W)
 * Seated February 6, 1847
 * Missouri's at-large congressional district
 * | Sterling Price (D)
 * style="font-size:80%" | Resigned August 12, 1846, in order to take part in the Mexican War
 * | William McDaniel (D)
 * Seated December 7, 1846
 * Alabama's 3rd congressional district
 * | William L. Yancey (D)
 * style="font-size:80%" | Resigned September 1, 1846
 * | James L. Cottrell (D)
 * Seated December 7, 1846
 * Alabama's 7th congressional district
 * | Felix G. McConnell (D)
 * style="font-size:80%" | Died September 10, 1846
 * | Franklin W. Bowdon (D)
 * Seated December 7, 1846
 * Iowa Territory's at-large congressional district
 * | Augustus C. Dodge (D)
 * colspan=3 style="font-size:80%" | Territory was dissolved after Iowa was admitted to the Union December 28, 1846
 * Iowa's at-large congressional district
 * colspan=2 style="font-size:80%" | Iowa admitted into the Union December 28, 1846
 * | S. Clinton Hastings (D)
 * Seated December 28, 1846
 * Iowa's at-large congressional district
 * colspan=2 style="font-size:80%" | Iowa admitted into the Union December 28, 1846
 * | Shepherd Leffler (D)
 * Seated December 28, 1846
 * Illinois's 7th congressional district
 * | Edward D. Baker (W)
 * style="font-size:80%" | Resigned January 15, 1847, in order to take part in the Mexican War
 * | John Henry (W)
 * Seated February 5, 1847
 * Illinois's 5th congressional district
 * | Stephen A. Douglas (D)
 * style="font-size:80%" | Resigned March 3, 1847, at close of congress after being elected to the US Senate
 * Vacant
 * Not filled this term
 * }
 * | S. Clinton Hastings (D)
 * Seated December 28, 1846
 * Iowa's at-large congressional district
 * colspan=2 style="font-size:80%" | Iowa admitted into the Union December 28, 1846
 * | Shepherd Leffler (D)
 * Seated December 28, 1846
 * Illinois's 7th congressional district
 * | Edward D. Baker (W)
 * style="font-size:80%" | Resigned January 15, 1847, in order to take part in the Mexican War
 * | John Henry (W)
 * Seated February 5, 1847
 * Illinois's 5th congressional district
 * | Stephen A. Douglas (D)
 * style="font-size:80%" | Resigned March 3, 1847, at close of congress after being elected to the US Senate
 * Vacant
 * Not filled this term
 * }
 * Vacant
 * Not filled this term
 * }

Committees
Lists of committees and their party leaders.

Senate

 * Agriculture (Chairman: Daniel Sturgeon)
 * Audit and Control the Contingent Expenses of the Senate (Chairman: Jesse Speight)
 * Charges of Corruption Contained in the Daily Times (Select)
 * Claims (Chairman: Isaac S. Pennybacker)
 * Commerce (Chairman: William Haywood then John Adams Dix)
 * Distributing Public Revenue Among the States (Select)
 * District of Columbia (Chairman: William Haywood then Simon Cameron)
 * Finance (Chairman: John C. Calhoun then Dixon H. Lewis)
 * Foreign Relations (Chairman: William Allen then Ambrose H. Sevier)
 * French Spoilations (Select) (Chairman: Daniel Webster)
 * Indian Affairs (Chairman: Ambrose H. Sevier then Arthur P. Bagby)
 * International Copyright Law (Select) (Chairman: Lewis Cass)
 * Judiciary (Chairman: Chester Ashley)
 * Manufactures (Chairman: Daniel S. Dickinson)
 * Memorial on W.T.G. Morton (Select)
 * Memphis Convention (Select) (Chairman: John C. Calhoun)
 * Military Affairs (Chairman: Thomas H. Benton)
 * Militia (Chairman: David R. Atchison)
 * Naval Affairs (Chairman: John Fairfield)
 * Ordnance and War Ships (Select)
 * Patents and the Patent Office (Chairman: Simon Cameron then Walter Colquitt)
 * Pensions (Chairman: Henry Johnson)
 * Post Office and Post Roads (Chairman: John M. Niles)
 * Printing (Chairman: Charles G. Atherton)
 * Private Land Claims (Chairman: David Levy Yulee)
 * Public Buildings and Grounds (Chairman: Simon Cameron)
 * Public Lands (Chairman: Sidney Breese)
 * Retrenchment (Chairman: Dixon H. Lewis)
 * Revolutionary Claims (Chairman: Thomas Clayton)
 * Roads and Canals (Chairman: Edward A. Hannegan)
 * Tariff Regulation (Select)
 * Territories (Chairman: James Westcott)
 * Smithsonian Institution (Select) (Chairman: John Adams Dix)
 * Whole

House of Representatives

 * Accounts (Chairman: Daniel P. King)
 * Agriculture (Chairman: Joseph H. Anderson)
 * Claims (Chairman: John Reeves Jones Daniel)
 * Commerce (Chairman: Robert McClelland)
 * District of Columbia (Chairman: Robert M.T. Hunter)
 * Elections (Chairman: Hannibal Hamlin)
 * Engraving (Chairman: Jacob S. Yost)
 * Expenditures in the Navy Department (Chairman: John F. Collin)
 * Expenditures in the Post Office Department (Chairman: John H. Harmanson)
 * Expenditures in the State Department (Chairman: Stephen Strong)
 * Expenditures in the Treasury Department (Chairman: John F. Scammon)
 * Expenditures in the War Department (Chairman: Owen D. Leib)
 * Expenditures on Public Buildings (Chairman: Orlando B. Ficklin)
 * Foreign Affairs (Chairman: Charles J. Ingersoll)
 * Indian Affairs (Chairman: John A. McClernand)
 * Invalid Pensions (Chairman: Preston King)
 * Judiciary (Chairman: George O. Rathbun)
 * Manufactures (Chairman: John Quincy Adams)
 * Mileage (Chairman: John P. Martin)
 * Military Affairs (Chairman: Hugh A. Haralson)
 * Militia (Chairman: James A. Black)
 * Naval Affairs (Chairman: Isaac E. Holmes)
 * Patents (Chairman: Thomas J. Henley)
 * Post Office and Post Roads (Chairman: George W. Hopkins)
 * Private Land Claims (Chairman: James B. Bowlin)
 * Public Buildings and Grounds (Chairman: Orlando B. Ficklin)
 * Public Expenditures (Chairman: Robert P. Dunlap)
 * Public Lands (Chairman: John A. McClernand)
 * Revisal and Unfinished Business (Chairman: Cullen Sawtelle)
 * Revolutionary Claims (Chairman: Joseph Johnson)
 * Revolutionary Pensions (Chairman: Richard Brodhead)
 * Roads and Canals (Chairman: Robert Smith)
 * Rules (Select)
 * Standards of Official Conduct
 * Territories (Chairman: Stephen A. Douglas)
 * Ways and Means (Chairman: James I. McKay)
 * Whole

Joint committees

 * Enrolled Bills (Chairman: Sen. Jesse D. Bright)
 * The Library (Chairman: N/A)
 * Printing (Chairman: N/A)
 * Smithsonian Bequest

Employees

 * Librarian of Congress: John Silva Meehan

Senate

 * Chaplain: Septimus Tustin (Presbyterian), until December 16, 1846
 * Henry Slicer (Methodist), elected December 16, 1846
 * Secretary: Asbury Dickins
 * Sergeant at Arms: Edward Dyer, died September 8, 1845
 * Robert Beale, elected December 9, 1845

House of Representatives

 * Chaplain: William H. Milburn (Methodist), elected December 3, 1845
 * William T.S. Sprole (Presbyterian), elected December 7, 1846
 * Clerk: Benjamin B. French
 * Doorkeeper: Cornelius C. Whitney, elected December 3, 1845
 * Postmaster: John M. Johnson
 * Reading Clerks:
 * Sergeant at Arms: Newton Lane