Maine's 2nd congressional district

Until the Missouri Compromise was reached in 1820, Maine was a part of Massachusetts as the District of Maine. When it became a state in 1820, Maine had seven congressional districts credited to it (Massachusetts including Maine had been given 20 districts after the 1810 census). Since Maine became a state, all but two districts have been reallocated to other states.

In 2018, the district became the first in the United States to elect the ranked choice winner over the first-past-the-post winner, after a referendum in 2016 changed Maine's electoral system from the latter system to the former. Incumbent representative Bruce Poliquin won a plurality of the first preference votes. However, the second and third preferences from two independent candidates flowed overwhelmingly to Jared Golden, allowing him to win with 50.6% of the vote once all preferences were distributed.

Historically, the district has tended to keep its incumbents regardless of party. When Golden defeated two-term Republican incumbent Bruce Poliquin in 2018, it was the first time an incumbent had lost reelection in the district since 1916.[3] Since 1965, the district's representatives have frequently sought statewide office. Three U.S. senators (Democrat William Hathaway and Republicans William Cohen and Olympia Snowe), one governor (Democrat John Baldacci), and one nominee for governor (Democrat Mike Michaud) all previously held the seat. Due to its size, the district's congressman is usually reckoned as a statewide figure; its footprint includes portions of all three television markets anchored in the state.

In US presidential elections, most states give all the state's electoral votes to the candidate that wins the statewide popular vote. This is a type of winner-takes-all voting. Maine and Nebraska instead use the congressional district method, where the winner in each of the state's congressional districts gets one electoral vote, and the statewide winner gets an additional two electoral votes. Since Maine introduced this system in 1969, Maine's second district voted the same way as the entire state of Maine for every election until 2016 and 2020.

• Maine's congressional districts
• List of United States congressional districts

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present
• Former Congressman Bruce Poliquin's web site