1978 United States Senate election in Maine
Cohen: 50–60% 60–70% 70–80%
The 1978 United States Senate election in Maine was held on November 7, 1978. Incumbent Democratic United States Senator William Hathaway decided to run for re-election to a second term, but was defeated by William Cohen, the Republican nominee and the United States Congressman from Maine's 2nd congressional district.
- Hayes Gahagan, former Maine State Senator
- John J. Jannace
- Plato Truman
|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%|
|Republican gain from Democratic||Swing|
- "Statistics of the Congressional Election of November 7, 1978" (PDF). Clerk of the United States House of Representatives. Retrieved July 2, 2014.