Maine

The state of Maine became part of the Union on 15 March 1820, as part of the Missouri Compromise. Maine initially had nine electoral votes, which was the most outside the original 13 colonies. Maine's population growth slowed over time, leading to a decrease in its electoral votes. Since the 1970 Census, the state has had four electoral votes.

Maine was not consistently Republican throughout its history; it was a swing state with periods of Democratic dominance. It turned blue in the elections of 1912, 1964, and 1968. In recent elections, Maine has leaned Democratic, with Hillary Clinton winning by a slim margin in 2016 and Joe Biden winning by a larger margin in 2020.

Maine has two congressional districts. In the 2016 and 2020 elections, the Democratic candidates won the 1st congressional district, and Donald Trump won the 2nd congressional district. Maine, along with Nebraska, allocates its electoral votes by awarding two to the statewide popular vote winner and one to the winner of each congressional district.