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![]() County results Cohen: 50–60% 60–70% 70–80% | |||||||||||||||||||||
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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.
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.
Elected to the U.S. Senate in 1972 in an upset victory against incumbent Margaret Chase Smith, Hathaway had established himself as a very liberal senator, being ranked an average of 92 percent more liberal than the Senate as a whole during his first term.[1] This put him at risk, considering the conservative nature of Maine before the 1990s.[2] Meanwhile, young former state senator Hayes Gahagan launched an independent campaign, running well to the right of Cohen.[3] Other candidates to join the race were independent John J. Jannace and perennial candidate Plato Truman.[4]
During the campaign, all candidates hit the campaign trail hard, with Hathaway receiving significant support from Jimmy Carter, Edmund Muskie, Ted Kennedy, and other national Democrats.[7] The biggest surprise, however, came from Hayes Gahagan. Shortly before election day, he held a press conference where he announced that "unknown, subversive agents" had been altering his campaign photos by implanting subliminal images of female genitalia in his hairline.[8]
Party | Candidate | Votes | % | ±% | |
---|---|---|---|---|---|
Republican | William Cohen | 212,294 | 56.59% | +9.83% | |
Democratic | William Hathaway (incumbent) | 127,327 | 33.94% | -19.29% | |
Independent | Hayes E. Gahagan | 27,824 | 7.42% | ||
Independent | John J. Jannace | 5,553 | 1.48% | ||
Independent | Plato Truman | 2,116 | 0.56% | ||
Majority | 84,967 | 22.65% | +16.19% | ||
Turnout | 375,114 | ||||
Republican gain from Democratic | Swing |