Mills exits Maine Senate race, leaving Collins with clearer path

Janet Mills’ withdrawal stripped Democrats of their most prominent Maine recruit and gave Susan Collins a clearer, less perilous path to another term. The two-term governor’s exit reset one of the most important Senate races of 2026, shifting the contest away from a matchup against a sitting governor and toward a harder, more uncertain Democratic effort built around a lesser-known challenger.

Mills, 77, had been seen as the kind of candidate Democrats needed in a state that has repeatedly rewarded familiarity and moderation. She was a popular governor and a longtime critic of President Donald Trump, but she said she lacked the financial resources a Senate campaign requires. That matters far beyond Maine: with Republicans holding a 53-47 majority, Democrats need a narrow set of pickup opportunities to win control of the chamber, and Maine was one of the races expected to be central to that fight.

Her departure also exposed how thin the Democratic bench remains in a race that party strategists viewed as a prime target. After Mills stepped aside, Graham Platner, a progressive outsider who reported raising $3.25 million in his first six weeks, emerged as the leading Democrat against Collins. That fundraising haul gave Platner momentum, but it also underscored the gap Democrats now face. The party’s hopes rest on whether an untested candidate can quickly build name recognition, money and campaign infrastructure in a state where personal reputation often matters as much as ideology.

Collins enters the race with a very different set of advantages. The longtime senator chairs the Senate Appropriations Committee, a post that gives her clout in Washington and reinforces the institutional relationships that have helped her survive tough races before. She also has a statewide brand built over years of campaigns in politically mixed Maine, where voters have often split tickets and rewarded candidates who appear independent of party-line warfare.

Mills’ exit suggests fundraising remains decisive even for prominent governors with deep political roots. It leaves Democrats more dependent on an outsider candidate in a state that often prizes moderation and direct voter familiarity, a combination that tilts the map toward Collins. For Republicans trying to hold a 53-47 Senate majority, that is a meaningful shift. Collins is not invulnerable, but the race became materially safer for her once Mills stepped aside, because Democrats lost their strongest chance to turn a competitive Maine contest into a top-tier upset bid.