Some two dozen Democratic senators have called on US Senator Al Franken to resign amid sexual misconduct claims.
In statements released almost simultaneously on Wednesday, a group of Democratic lawmakers said the embattled Minnesota senator must step down.
Mr Franken, a former Saturday Night Live comedian, has been accused of groping and sexually harassing seven women, including a US military veteran.
He has apologised to his accusers, while disputing some allegations.
In a statement provided to BBC News, Mr Franken’s office said the senator “will be making an announcement tomorrow”.
Senators Kamala Harris, Claire McCaskill, Maggie Hassan, Mazie Hirono, Patty Murray, Kirsten Gillibrand – all prominent female Democratic lawmakers – released their statements online.
They spoke out following a US media report that Mr Franken had allegedly tried to forcibly kiss a former congressional aide in 2006. He denied the claim.
Senators Tammy Baldwin, Bob Casey, Joe Donnelly, Debbie Stabenow, and Sherrod Brown released similar statements shortly after.
Massachusetts Senator Elizabeth Warren also told Mr Franken he should quit, her aide told the Boston Globe.
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