ME · State rules

Maine

Primary system

Open to unaffiliated

Who can vote in a party primary

Unaffiliated voters may pick either party’s primary; registered members locked to their party

Party-switch deadline

Change takes effect after 15 days; may not vote in a primary during that window

Note: Strategic option: registering unaffiliated preserves cycle-by-cycle choice.

This cycle's dates

Next primary

Tuesday, June 9, 2026

Party-switch deadline

Monday, May 25, 2026

Registration deadline

Monday, May 25, 2026

Computed from the standing rule + NCSL's 2026 primary calendar (fetched 2026-07-27). Not yet checked against the official state source for weekend/holiday rollover or this cycle's final confirmation — verify before relying on it.

Verification pending Last checked: 2026-07-27

Official state election site → What does this mean for me? →

Draft sourced from NCSL. View source.