Rep. Eric Swalwell (D-Calif.) is resigning from Congress just a day after ending his campaign for California governor amid sexual assault allegations.

“I am deeply sorry to my family, staff, and constituents for mistakes in judgment I’ve made in my past,” Swalwell wrote in a post on X. “I will fight the serious, false allegation made against me. However, I must take responsibility and ownership for the mistakes I did make.”

Swalwell has consistently denied the allegations, which were first reported on April 10 by the San Francisco Chronicle. The woman who made the allegations told the Chronicle—which didn’t name her—that Swalwell sexually assaulted her on two occasions, including once while she was employed by him and heavily intoxicated. The Epoch Times has not verified the allegations made against Swalwell in the report.

The congressman subsequently faced pressure from fellow Democrats to withdraw from the California gubernatorial race. Swalwell did so on April 12, acceding to pressure from Speaker Emerita Nancy Pelosi (D-Calif.), a kingmaker in California politics, to leave the race.

“I will fight the serious, false allegations that have been made—but that’s my fight, not a campaign’s,” Swalwell wrote in a post on X on the evening of April 12.

On April 10, House Democratic leaders—including House Minority Leader Hakeem Jeffries (D-N.Y.), Democratic Whip Katherine Clark (D-Mass.), and Democratic Caucus Chair Pete Aguilar (D-Calif.)—issued a joint statement calling for an investigation into the allegations.

Swalwell’s decision to leave Congress comes amid mounting bipartisan pressure in recent days for the California Democrat to also resign his seat in the House of Representatives.

The same day he announced his resignation, the House Ethics Committee announced it had opened a probe into the allegations. Historically, the House has suspended such probes once the member under scrutiny resigns.

Some Democrats had said they would support a measure to expel him from the chamber entirely—an extreme penalty for conduct considered grossly immoral. It was last exercised against Rep. George Santos (R-N.Y.) in December 2023.

“Expelling anyone in Congress without due process, within days of an allegation being made, is wrong,” Swalwell had said in an earlier post on X. “But it’s also wrong for my constituents to have me distracted from my duties. Therefore, I plan to resign my seat in Congress.

“I will work with my staff in the coming days to ensure they are able, in my absence, to serve the needs of the good people of the 14th congressional district.”

Two-thirds of the House must support an expulsion resolution to force a lawmaker from Congress.

Rep. Anna Paulina Luna (R-Fla.) said in a post on X that she would file a motion to expel Swalwell from Congress, urging the politician to resign within 24 hours. Luna also seeks to expel Rep. Tony Gonzales (R-Texas), who admitted to an affair with a former staffer and abandoned his reelection bid last month.

On Monday, Gonzalez also announced he would file his “retirement from office” when Congress returns Tuesday, writing “It has been my privilege to serve the great people of Texas.”

Rep. Pramila Jayapal (D-Wash.), a former leader of the Congressional Progressive Caucus, told NBC News on April 12 that she would vote to expel Swalwell.

Rep. Jared Huffman (D-Calif.) previously wrote on X that he would support voting to expel both Swalwell and Gonzales if they do not resign from Congress.

Separately, more than 50 of Swalwell’s former staffers signed a letter urging him to resign from Congress and withdraw his gubernatorial bid, describing the sexual misconduct allegations as serious and credible. They called on authorities to launch a full investigation into the allegations.

“Remaining in either role while these allegations hang unresolved is an insult to every person who has ever worked for him, reported to him, or placed their trust in him,” the former staffers wrote in the letter shared with multiple media outlets.

California will hold its primary election on June 2. Democratic contenders remaining in California’s gubernatorial race include former Health Secretary Xavier Becerra, former Rep. Katie Porter (D-Calif.), billionaire activist Tom Steyer, and former Los Angeles Mayor Antonio Villaraigosa.

The expected dual resignations of both Swalwell and Gonzalez will bring the GOP majority down to a 216–213 margin, leaving House Speaker Mike Johnson (R-La.) with just one vote to spare on party-line items.

Aldgra Fredly contributed to this report.