1940 United States Senate election in Maine
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County results  Brewster: 50–60% 60–70% 70–80% Brann: 50–60% 60–70%  | |||||||||||||||||
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The 1940 United States Senate election in Maine was held on September 9, 1940.
Incumbent Republican Senator Frederick Hale did not run for re-election. Republican U.S. Representative and former Governor Owen Brewster won the open seat, defeating two Governors of Maine: incumbent Republican Governor Lewis Barrows in the primary and former Democratic Governor Louis Brann in the general election.