1978 United States Senate election in Maine
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Cohen: 30–40% 40–50% 50–60% 60–70% 70–80% 80–90% >90% Hathaway: 40–50% 50–60% 60–70% 70–80% >90% Gahagan: 40-50% Tie: 40-50% 50% | |||||||||||||||||||||
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| Elections in Maine |
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The 1978 United States Senate election in Maine was held on November 7, 1978. Incumbent Democratic U.S. Senator William Hathaway ran for re-election to a second term, but was defeated by William Cohen, the Republican U.S. Representative from Maine's 2nd congressional district. This is the last time a Senator from Maine lost re-election.
No incumbent Senator has lost by such a large margin since Hathaway's 22.65-point loss, though James Abdnor in 1980, John Boozman in 2010, and Tommy Tuberville in 2020 all received larger percentages of the vote than Cohen's 56.59% against incumbent Senators.