The deadline to utilize online voter registration at maine.gov/vote ahead of the November 4, 2025, Referendum Election ends Oct. 14, 2025, at 5 p.m. Mail-in registration also ends today with mailed applications due at local municipal offices by close of business. 

Maine has same day voter registration, meaning that Mainers may register to vote and cast their ballot on the same day, even Election Day. Registrations must be done in person at the voter’s municipality. Voter registrations through the Bureau of Motor Vehicles ends on October 28, 2025. 

“While online voter registration closes today, every citizen in Maine still has the opportunity to register to vote up to and on Election Day via same day voter registration,” said Secretary of State Shenna Bellows. “Maine consistently leads the nation in voter turnout, and the two referendum ballot questions this year are generating strong interest from voters yet again, making it another great election year.” 

To register to vote in Maine, voters must be Maine residents, U.S. citizens, and at least 16 years old, though only Mainers who will be 18 years old on or before November 4, 2025, may vote in the Referendum Election. When registering for the first time, voters must provide proof of residency and identity. Current or former incarceration status does not disqualify any Mainer from registering to vote or casting their ballot. Incarcerated persons at a correctional facility or county jail may register to vote in the Maine municipality where they established residency prior to incarceration. 

Mainers who are not sure if they are registered to vote or if their voter registration is up to date should contact their municipal clerk’s office to check. Contact information for municipal clerks and registrars is available at www.maine.gov/sos/cec/elec/munic.html.  Maine does not currently have an online registration lookup tool.