Overview

• Graham Platner, 40, a Marine and Army veteran, oyster farmer and Sullivan harbormaster, announced a campaign built on universal health care, housing affordability and ending U.S. involvement in foreign wars.
• In a launch video, he condemned “the oligarchy,” accused Susan Collins of a “fake” moderation brand, and framed his run as a working‑class alternative.
• Platner joins a primary field that includes Jordan Wood and David Costello, as Gov. Janet Mills says she is considering a run and Rep. Jared Golden has declined to enter.
• He has enlisted national operatives including Fight Agency’s Morris Katz and adviser Joe Calvello, a move that has fueled scrutiny of his progressive ties.
• Maine GOP chief Jason Savage branded him “Maine’s Mamdani” and Collins’ camp called him “just another progressive,” as Democrats eye the race as a top 2026 pickup against the well‑funded Appropriations chair.