Susan Collins is asking Maine voters for a sixth term in the Senate at a moment when her political identity is being tested by the same force that helped build it: a reputation for independence. The 73-year-old Republican has spent three decades styling herself as a moderate conservative who delivers for Maine, but this race is landing after Donald Trump’s return to the White House and after Democrats have made her seat one of their clearest paths back to Senate control.
Her challenger is Graham Platner, the presumptive Democratic nominee, a 41-year-old Marine veteran and oysterman with no national political experience. Platner’s rise helped push Janet Mills out of the primary after the governor said dwindling financial resources made a bid untenable, leaving Democrats with a candidate who is less known than Collins but well suited to a year in which voters are primed to punish incumbents tied to Washington. Collins is the only Senate Republican running for re-election in a state Kamala Harris won in 2024, which makes her race uniquely exposed in a chamber where Democrats view Maine as one of four seats they can realistically flip.
That is why the campaign has already become a referendum on whether Collins’s long brand of moderation still means what it once did. She voted to convict Trump in his second impeachment trial after the January 6 insurrection, opposed Pete Hegseth’s nomination for defense secretary and backed Ketanji Brown Jackson for the Supreme Court, but she also supported Brett Kavanaugh and has often split from her party without breaking with it. Earlier this year, Democrats seized on an image of Collins holding a Maga cap in the Oval Office, trying to turn her carefully cultivated image into evidence that compromise with Trump-era Republicans has gone too far.
Platner has sharpened that attack by casting Collins’s moderation as complicity, arguing that the senator’s independence is too selective to matter. The criticism echoes a wider Democratic case that Collins has benefited for years from a public image sturdy enough to survive hard questions while remaining useful to Republican leadership. Tony Payne, a Collins backer, said, “She is the most talented Senate staffer to have a seat in the Senate,” a line that captures both her skill and the skepticism that follows her.
“The feeling is widespread that she will show her independence only when her vote is not required,” Payne said, a judgment that goes to the heart of the fight now unfolding in Maine. Collins has long been able to present herself as the senator who can stand apart from Washington when it matters, but this time the question is whether that posture still persuades enough voters in a state Democrats believe has become their best opening in the country. The answer will shape not just her sixth-term bid, but one of the few Senate contests that could decide which party controls the chamber next year.
