
Susan Collins Faces Heated Democratic Challenge in Maine Senate Race
AUGUSTA, Maine – The race to unseat Republican Senator Susan Collins is intensifying, with a bruising Democratic primary battle unfolding between Maine Governor Janet Mills and combat veteran turned oyster farmer Graham Platner. Both contenders are heavily investing in their campaigns, while Collins has, so far, adopted a more reserved spending strategy.
The Democratic effort to regain control of the U.S. Senate is heavily reliant on key races like the one in Maine. With the June 9th primary election approaching, Mills and Platner are engaged in a proxy war reflecting divisions within the Democratic Party. Meanwhile, a robust Republican campaign is fully underway to secure Collins a sixth term.
A Clash of Strategies and Endorsements
Governor Mills, recruited by Senate Minority Leader Chuck Schumer (D-NY), represents the establishment wing of the party. Platner, a political newcomer, quickly garnered the endorsement of Senator Bernie Sanders (I-VT) upon launching his campaign in August. He initially gained traction by appealing to Democrats disillusioned with Washington, arguing that party leaders had neglected working-class Mainers and relied on ineffective strategies against Collins.
Despite initial skepticism, Platner’s campaign has proven surprisingly resilient. Recent polls from the University of New Hampshire Survey Center and Maine-based Pan Atlantic SMS show him leading Mills in the primary contest. This has prompted Mills to directly address controversial social media posts from Platner’s past.
Controversial Posts and Heated Exchanges
Mills’ recent advertising campaign focuses on a 2013 Reddit post by Platner regarding a website promoting anti-assault underwear for women. Platner responded to the resurfaced post, apologizing for the comments, attributing them to the anger and disillusionment he experienced during his military service in Iraq and Afghanistan. He stated, “I did not recognize in them myself or the man that I am today.”
Platner’s campaign swiftly countered with a direct-to-camera TV spot and a significant advertising spend, exceeding Mills’ spending during the same period. According to data from AdImpact, Platner has outspent Mills $4.2 million to $1.16 million since early last year. His campaign has also outraised Mills by nearly a 3-to-1 margin, according to the latest Federal Election Commission filings.
Outside Spending and Republican Support
While Democratic-aligned outside groups are active, much of their spending has focused on attacking Collins directly, rather than supporting a specific primary candidate. Collins, on the other hand, has spent approximately $240,000, benefiting from substantial support from Republican super PACs, including One Nation, which has already invested over $10 million in advertising emphasizing her ability to secure federal funding for Maine.
Strategic Implications and Voter Appeal
Political science professor Ron Schmidt from the University of Southern Maine suggests that the early spending by both Mills and Platner is strategically sound. Platner is focused on introducing himself to voters, while Mills aims to highlight potentially damaging aspects of his past. Mills’ attacks are particularly targeted at female voters, hoping to secure their support in the primary and ultimately in the general election.
However, Schmidt cautions that Mills’ strategy carries the risk of alienating Platner’s supporters, potentially hindering her chances in the general election. Mills has framed her candidacy around her confrontations with former President Trump and her perceived electability, arguing that highlighting Platner’s past is crucial for informing Maine voters.
Platner, meanwhile, portrays the attacks as an attempt by the Democratic establishment to undermine his candidacy. He stated, “It takes political courage to come out against those in power, and it is not lost on me what this means.”
You can find more information about the Senate race at GovTrack.us and The Official Senate Website.




