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  McKernan: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Brennan: 40–50% 50–60% 60–70% 70–80% 80–90% >90% Tie: 30–40% 40–50% | |||||||||||||||||||||
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The 1990 Maine gubernatorial election took place on November 6, 1990 to elect the governor of Maine. Incumbent Republican governor John McKernan won re-election to a second term, defeating Democratic nominee, former governor and incumbent Congressman Joseph E. Brennan in a tight contest. Independent Andrew Adam took in 9.3% of the vote. Both Brennan and McKernan were unopposed in their respective primaries.
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This was the last election until 2010 that Maine elected a Republican governor. This was also the last Maine gubernatorial election until 2022 in which the winner was of the same party as the incumbent president, as well as the most recent Maine gubernatorial election that an incumbent governor won re-election with a smaller margin of victory than in their first election.
