Graham Platner projected to win Maine Democratic Senate primary, setting up race against GOP Sen. Susan Collins

Updated on: June 9, 2026 / 10:11 PM EDT / CBS News

Graham Platner projected to win Maine Democratic Senate primary, setting up race against GOP Sen. Susan Collins

TL;DR

  • Graham Platner won the Democratic primary for the Maine Senate seat, with Sen. Susan Collins running unopposed in the Republican primary.
  • The race is considered pivotal for Democrats aiming to gain control of the Senate.
  • Platner, a progressive-backed candidate, faces allegations of sending sexually explicit texts and exhibiting "unsettling" behavior towards women, which he denies.
  • Platner has previously apologized for past internet comments and covering a tattoo recognized as a Nazi symbol.
  • Despite controversies, Platner secured the nomination after Maine Gov. Janet Mills withdrew from the race.
  • Sen. Bernie Sanders and Rep. Ro Khanna have defended Platner, urging focus on policy issues.
  • Platner's former political director, Genevieve McDonald, suggested he could withdraw, allowing Democrats to select a new nominee.
  • Collins is the only Republican seeking reelection in a state that voted for Vice President Kamala Harris in 2024.
  • The Cook Political Report rates the Maine Senate race as a toss-up.