1950 United States Senate election in Maryland

The 1950 United States Senate election in Maryland was held on November 7, 1950. Incumbent Democratic U.S. Senator Millard Tydings ran for a fifth term in office, but was defeated by Republican John Marshall Butler.

Candidates

 * John A. Meyer, former U.S. Representative from Baltimore
 * Hugh J. Monaghan II
 * Millard Tydings, incumbent Senator since 1927

Candidates

 * John Marshall Butler, Baltimore attorney
 * D. John Markey, former University of Maryland football coach and candidate for Senate in 1946

Results
Although Markey received more raw votes than Butler, Butler received the highest unit vote at the State Convention and was nominated for Senate.

Counties that flipped from Democrat to Republican

 * Anne Arundel
 * Baltimore (County)
 * Baltimore (City)
 * Charles
 * Frederick
 * Montgomery
 * Prince George's
 * Somerset
 * Wicomico