Top Washington Democrats are pulling their support for their nominee for a Maine Senate seat, Graham Platner, following allegations made public Monday by a woman he dated about seven years ago that he sexually assaulted her.

Among those most recently pulling their support is Senate Democratic leader Chuck Schumer.

The New York senator said in a joint statement with Kirsten Gillibrand, chairwoman of the Democratic Senatorial Campaign Committee: “Graham Platner needs to immediately withdraw as the Democratic nominee for Senate and allow Maine Democrats the opportunity to choose a new candidate who can defeat Susan Collins.”  

In addition, the Democratic National Committee sent out an email soliciting money for Senate races hours after the allegations were reported by Politico, but Maine was not one of them, according to the Associated Press. 

DNC Chairman Ken Martin said, “Maine Democrats should select a new nominee.”

Platner denies the most recent allegations but said after they were made public that he's taking to reflect on his candidacy. He is trying to unseat Collins, a Republican. He has until Monday to quit the race without his name remaining on printed ballots. There so far has been to top replacement to emerge.

Late Monday, Rep. Ro Khanna, who has stood by Platner even as the candidate faced previous controversies, said the allegation was enough. 

“I’ve been very clear that sexual assault or violence against women is a red line,” the California Democrat said. “These allegations are very serious and credible. Graham Platner should drop out from the race. I am withdrawing my endorsement.”

Arizona Sen. Ruben Gallego and Massachusetts Sen. Elizabeth Warren also announced they were pulling their endorsements and called on Platner to drop out, the Associated Press also reports.