The 1940 United States Senate election in Mississippi was held on November 6, 1940. Incumbent Senator Theodore Bilbo was re-elected to a second term.

1940 Democratic Senate primary election in Mississippi

← 1934 August 27, 1940 1946 →

Nominee Theodore Bilbo Hugh White Party Democratic Democratic Popular vote 91,334 62,641 Percentage 59.32% 40.68%

County results Bilbo:      50-60%      60-70%      70-80%      80-90% White:      50-60%      60-70%      70-80% Tie:      50%

U.S. senator before election Theodore Bilbo Democratic Elected U.S. Senator Theodore Bilbo Democratic

On August 27, Bilbo won the Democratic primary election over Governor Hugh L. White with 59.32% of the vote. Bilbo won the November general election without an opponent.