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Voter file data: L2 Data · Registration counts: Maine Secretary of State · Updated May 20, 2026

Maine Voter Registration

& Party Affiliation Statistics

Total Registered
965,085
Largest Party
Independent/Other (36.4%)
Independent / NPP
36.4%
Primary Type
State:Semi-Open Primary
Pres:Semi-Closed Primary
OverviewRegistrationPrimary RulesTurnout
At a Glance

Maine at a Glance

Key voter registration statistics · Updated 2026

Registered Voters
965,085
across 16 counties
Independent / NPP
36.4%
of registered voters
2024 Turnout
74.6%
of eligible voters
Registration

Voter Registration by Party

How many registered Democrats, Republicans, and Independents are in Maine?

33.78%
29.83%
36.4%
Democratic33.78%
Republican29.83%
Independent/Other36.4%
PartyRegistered Voters% of Total
Democratic
325,97433.78%
Republican
287,85829.83%
Independent/Other
351,25336.4%
Primary Rules

How Maine's Primary Works

Maine uses different primary rules for state/congressional and presidential elections

State / Congressional

⚖
Semi-Open Primary
Voters don't have to publicly declare a party affiliation, but they must request a specific party's ballot at the polling place.
How It Works
Similar to open primaries, but the party whose ballot you request may be recorded. Some states allow parties to restrict their primaries to registered members, creating a hybrid system.
IVP's Position
Marginally better access for independents, but the party-based structure remains the core limitation.
See all primary systems by state →

Presidential

⚖
Semi-Closed Primary
Registered party members vote in their own party's primary. Unaffiliated voters may choose a party primary to participate in, but voters registered with a different party cannot cross over.
How It Works
If you're registered Democrat, you vote in the Democratic primary. If you're registered Republican, you vote in the Republican primary. If you're unaffiliated, you can pick either; you may need to formally affiliate at the polls.
IVP's Position
An improvement over closed primaries, but still ties the system to party labels. Voters shouldn't have to join a private organization to participate in publicly funded elections.
See all primary systems by state →
Turnout

Voter Turnout in Maine

How many eligible Maine residents actually vote?

Recent Elections
ElectionTurnoutVoted
2024 General74.6%842,447
2022 General60.9%680,909
2020 General74.9%828,305
2024 Presidential Primary18.9%182,378
2024 State PrimaryEstimated ~22% — Maine SoS publishes individual race results only (no published statewide rollup); June 11, 2024 included US Senate D+R primaries and congressional primaries. Aggregate requires summing race-level data.—
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