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Voter file data: L2 Data · Registration counts: Massachusetts Secretary of State · Updated May 4, 2026

Massachusetts Voter Registration

& Party Affiliation Statistics

Total Registered
4,911,924
Largest Party
Democratic (24.67%)
Independent / NPP
67.26%
Primary Type
Semi-Closed Primary
OverviewRegistrationPrimary RulesTurnout
At a Glance

Massachusetts at a Glance

Key voter registration statistics · Updated 2026

Registered Voters
4,911,924
across 14 counties
Registration Rate
83.3%
eligible population
No Party Preference
67.26%
of registered voters
2024 Turnout
68%
of eligible voters
Registration

Voter Registration by Party

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

24.67%
8.07%
67.26%
Democratic24.67%
Republican8.07%
Independent/Other67.26%
PartyRegistered Voters% of Total
Democratic
1,211,65724.67%
Republican
396,4088.07%
Independent/Other
3,303,85967.26%
Primary Rules

How Massachusetts's Primary Works

Massachusetts uses a Semi-Closed Primary system

⚖
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 Massachusetts

How many eligible Massachusetts residents actually vote?

Eligible vs Registered
83.3% registered
4,911,924 registered5,894,309 eligible
982,385 eligible residents are not registered to vote.
Recent Elections
ElectionTurnoutVoted
2024 General68%3,512,930
2022 General48.9%2,511,461
2020 General71.3%3,658,005
2024 Presidential Primary24.8%1,217,238
2024 State Primary16.7%841,940
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