Race details
Maine U.S. Senate Democratic Primary
June 9, 2026Mainetoo early
Why this race matters
Nominee to challenge long-time incumbent United States Senator Susan Collins. Governor Janet Mills (Establishment) vs Graham Platner (Populist/Veteran). Platner has out-raised Mills with nearly $8 million in small-dollar donations, signaling a grassroots shift in a state that usually favors moderate Democrats.
Candidates
Janet Mills (D)
Vote totals pending
Graham Platner (D)
Vote totals pending