2026 United States Senate election in Maine

For related races, see 2026 United States Senate elections.
Not to be confused with 2026 Maine State Senate election.

2026 United States Senate election in Maine
November 3, 2026 (2026-11-03)
 
Nominee Susan Collins (presumptive)
Party Republican Democratic
Incumbent U.S. senator

Susan Collins
Republican



The 2026 United States Senate election in Maine will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of Maine. Incumbent Republican Senator Susan Collins, first elected in 1996, is running for re-election to a sixth term in office. If elected, Collins will become the longest-serving U.S. Senator from Maine, surpassing William P. Frye on May 26, 2027.

This will be the only Republican-held Senate seat up for election in 2026 in a state that Kamala Harris won in the 2024 presidential election. Collins is the only incumbent Republican senator in any of the 19 states that Donald Trump did not win in any of his three elections. Both the Democratic primary and general election are expected to be some of the most competitive races in the Senate election cycle.

This election will coincide with U.S. House elections for Maine's two congressional districts, a gubernatorial election, and various other state, county and local elections. The primary is scheduled to take place on June 9, 2026. Both the primary and general elections will be conducted with ranked-choice voting.

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