Swalwell, a seven-term lawmaker and former contender in California’s gubernatorial race, announced his decision after reports by the San Francisco Chronicle and CNN detailed accusations from multiple women, including claims of sexual assault involving a former employee. He has denied the assault allegations but acknowledged “mistakes in judgment” in a statement posted on social media.

The House Ethics Committee said it had opened an inquiry into whether Swalwell engaged in sexual misconduct toward an employee working under his supervision.

The panel noted that the existence of the investigation does not indicate that any violation has occurred.“I will fight the serious false allegation made against me,” Swalwell said, adding that he would nonetheless step down to avoid distracting from his duties and responsibilities to constituents.

The allegations prompted swift political fallout, with lawmakers from both parties calling for his resignation. Some members of Congress had also pushed for an expulsion vote, increasing pressure on Swalwell to leave office.

California Senator Adam Schiff, who had previously endorsed Swalwell’s gubernatorial bid before withdrawing support, described the situation as “shocking and deeply upsetting” and said the resignation was appropriate.

CNN reported that, in addition to the assault allegations, three other women accused Swalwell of misconduct, including sending unsolicited explicit messages or images. These claims have not been adjudicated.Swalwell’s departure will trigger a special election in his Northern California district, which he won by more than 30 percentage points in 2024.

Under California law, the governor must call a special election within 14 days of a vacancy.The future of the Ethics Committee’s investigation remains uncertain, as such probes are often discontinued when a lawmaker resigns.