Maine Primary Election (verify date at your state's Secretary of State website)
Monday, June 1, 2026 · 10 days away
U.S. House, U.S. Senate, Governor, statewide offices
What’s being decided
A primary election determines which candidates advance to the November general election. Voters in each party select their nominee, and the winners face each other in the fall.
Maine holds an semi-closed primary — registered party members and unaffiliated voters may participate.
Candidates
U.S. Senate
Republican · Incumbent since 1997
Susan Collins has represented Maine in the U.S. Senate since 1997. She is known as one of the most moderate members of the Senate Republican caucus and has a history of breaking with her party on high-profile votes.
Voter information
Registration deadline
Register through Election Day
You can register and vote on Election Day at your polling place.