Primary Elections
Maine Primary Elections 2026
Primary date, filing deadlines, key contested races, and what to watch in Maine ahead of the 2026 general election.
June 9, 2026
Primary Date
Ranked-Choice Voting applies
Runoff / RCV
March 2026
Filing Deadline
Very High — Collins Senate rac
Competitiveness
Key 2026 Primary Races
| U.S. Senate | Susan Collins (R) up 2026 — major national race |
| Governor | Janet Mills (D) is term-limited — open seat |
| U.S. House | ME-1 (Pingree safe), ME-2 (Golden competitive) |
2026 Primary Overview
Maine uses ranked-choice voting for federal races. Susan Collins Senate re-election is a top national race. The governor open seat (Mills term-limited) creates a competitive primary on both sides. ME-2 (Jared Golden) is perpetually competitive.