Tuesday may be uneventful in the pine tree state, but that would be welcomed by incumbent Senator Susan Collins and the Democratic oysterman Graham Platner.
Senator Susan Collins, who is seeking her sixth term, has consistently remained the frontrunner on the Republican side, only dropping below 75% briefly in January when the question shaping the market was whether or not the veteran would run again. In early February, Collins announced she would seek another term, and heads into tomorrow’s primary election as a heavy favorite of over 99%.
This is opinion, not trading advice. See disclaimer below.
Despite recent controversies, Platner remains the strong favorite to be Democratic choice to challenge Collins for the Maine Senate seat in November. On May 30th, the Wall Street Journal reported that Platner’s spouse disclosed sexually-explicit texts between Platner and other women to his campaign during internal opposition research. That article was followed days later by a New York Times report detailing “unsettling” behavior between Platner and former partners.
In a video posted to social media, Platner’s wife referred to the media coverage of Platner as “shameful.” Even as the media cycle homed in on Platner’s past, the market never had his odds to win the nomination dip below 94%. Janet Mills, Platner’s initial biggest challenger, suspended her campaign in April and has not resumed her campaign even in the wake of the last two weeks.
Winner in November?
While the primary markets may not have reacted much to the Platner news, the market for the looming showdown in November certainly shifted. With the market pricing in a likely Collins versus Platner faceoff, the Democratic party dropped to a 52% chance on Thursday June 4th, their lowest odds since August of last year. Platner has somewhat rebounded in the days since, but the odds for the November election remain at one of their closest marks of 2026.
Will Platner drop out?
However, Platner winning the nomination on Tuesday does not officially tie him to the Democratic party in November. Under Maine election law, candidates who win the nom in the primary have until the second Monday in July to withdraw from the race. In that circumstance, the party would have until the fourth Monday in July to replace Platner. Last week, Platner met with major Democratic lawmakers, including Senate Minority Leader Chuck Schumer, on Capitol Hill. Currently, the market values the likelihood of Platner dropping out at 11%.
Follow William Hoey on X: @therealWillHoey
Follow Kalshi on X: @Kalshi
This article may contain content generated with the assistance of artificial intelligence. The opinions and perspectives presented in this article belong solely to the author. This is not financial advice. Trading on Kalshi involves risk and may not be appropriate for all. Members risk losing their cost to enter any transaction, including fees. You should carefully consider whether trading on Kalshi is appropriate for you in light of your investment experience and financial resources. Any trading decisions you make are solely your responsibility and at your own risk. Information is provided for convenience only on an "AS IS" basis. Past performance is not necessarily indicative of future results. Kalshi is subject to U.S. regulatory oversight by the CFTC.
