Democratic Senate leaders and several of Graham Platner’s most prominent backers withdrew their support for his Maine Senate campaign on Monday after a woman came forward with allegations that he severely assaulted her in 2021. Platner has denied the claim.

Senate Minority Leader Chuck Schumer and Sen. Kirsten Gillibrand, who chairs the Democratic Senatorial Campaign Committee, said in a joint statement that Platner should “immediately withdraw as the Democratic nominee for Senate.” The committee said it would no longer back his campaign financially if he remains on the ballot.

A wave of senators followed, including Elizabeth Warren, Ruben Gallego, Mark Kelly, Elissa Slotkin, Jon Ossoff, Cory Booker and Adam Schiff, all calling on Platner to leave the race. Rep. Ro Khanna, who had appeared alongside Platner at a rally last month, said he was withdrawing his endorsement as well. The Democratic National Committee, Senate Majority PAC, VoteVets, Our Revolution and End Citizens United also pulled their support.

The woman, identified as 41-year-old Jenny Racicot, told reporters that Platner came to her Maine home and assaulted her. Platner has denied the allegation, saying in a video posted online that he is weighing the “political reality” the report will bring to his campaign.

This marks a sharp shift from how Democrats responded to Platner’s earlier controversies, including offensive past social media posts, a since-covered tattoo resembling a Nazi symbol, and previous allegations of abusing women.

Under Maine law, if Platner withdraws before July 13, the state party can select a replacement candidate by July 27. Several Democrats, including Troy Jackson, Secretary of State Shenna Bellows and former public health official Nirav Shah, are reportedly being contacted as potential replacements. Sen. Bernie Sanders, one of Platner’s highest-profile supporters, has not yet commented.