Maine Senate nominee Graham Platner faces pressure to quit before the July 13 replacement deadline as party leaders, market traders and potential successor speculation reshape the race.
Graham Platner, the Democratic nominee for the U.S. Senate in Maine, came under intense pressure to withdraw after Politico reported that a woman who previously dated him accused him of sexual assault in 2021. Platner denied the allegation as “categorically false” and said he was taking time to “reflect on the best path forward.” On Monday, Kalshi traders pushed the odds of Platner leaving the race before July 14 to 82%, up from single digits earlier in the day, while later-dated contracts implied roughly 97% odds of an exit by July 17 and July 31. Under Maine law, July 13 is the deadline for Platner to withdraw and be replaced on the ballot, with the Maine Democratic Party then having until 5 p.m. on July 27 to name a replacement nominee. Polymarket’s Maine Senate market swung to 59% for Democrats and 41% for Republicans, and a separate replacement-nominee market made former state Senate president Troy Jackson the leading prospect. Senate Democratic leaders and the Democratic Senatorial Campaign Committee said they would not fund the race unless Platner withdrew, while reports of crisis meetings and his continued campaign activity were read by some market participants as signals against an immediate exit even as traders remained highly sensitive to new developments.