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March 6 (UPI) — U.S. Rep. Tony Gonzales, R-Texas, announced on Friday that he is ending his campaign for re-election after acknowledging an extramarital affair that he had been denying for months.

House Republican leadership called for Gonzales to pull out of the race after the House Ethics Committee said it was investigating the three-term member of Congress over the affair and he then admitted to it on a radio show hours later.

After Tuesday’s primary, Gonzales was to face a runoff for the Republican nomination for his seat after he and YouTuber Brandon Herrera each failed to win more than 50% of the vote.

“After deep reflection and with the support of my loving family, I have decided not to seek re-election while serving out the rest of this Congress with the same commitment I’ve always had to my district,” Gonzales said in a post on X.

“Through the rest of my term, I will continue fighting for my constituents, for whom I am eternally grateful,” he said.

Gonzales has for months been denying he had an affair with his former staffer, Regina Santos-Aviles, 35, in 2024, who later died by suicide after lighting herself on fire.

Gonzales had denied the affair happened since texts were shared by her husband, Adrian, of him asking for a “sexy pic” and her favorite sex position, The Washington Post reported.

Wednesday, not long after the ethics committee announced its investigation, Gonzales said on a radio show that he took “full responsibility for those actions,” admitting to the affair, and said he has reconciled with his wife.

House GOP leadership on Thursday, including Speaker Mike Johnson, R.-La., publicly called for him to end his campaign after the admission.

Herrera’s campaign manager told NBC News in a statement that he appreciated Gonzales for “making the appropriate decision.”

“I look forward to being the voice of TX23 that our district deserves … It’s an honor to be chosen and together we will make Texas proud,” he said in the statement.

WASHINGTON — Republican Rep. Tony Gonzales of Texas said late Thursday he was withdrawing from his reelection race, after having admitted an affair with a former staff member who later died by suicide, but he vowed to finish out his term in Congress.

He had faced calls from GOP leadership to end his reelection bid, and from others in Congress to resign.

“After deep reflection and with the support of my loving family, I have decided not to seek re-election,” Gonzales said in a statement posted late Thursday to X.

The move is the latest in a quickly changing situation that stunned Capitol Hill and resulted in a House Ethics Committee investigation into his conduct. Gonzales’ decision to bow out of the race appears to clear the field. On Tuesday, he had been forced into a May runoff against Brandon Herrera, a gun manufacturer and YouTube gun-rights influencer who narrowly lost to him in the 2024 primary.

House Speaker Mike Johnson and the GOP leadership earlier Thursday had called on Gonzales to withdraw from reelection after Gonzales, a day earlier, acknowledged a relationship that has upturned the political world in his home state and in Washington.

“We have encouraged him to address these very serious allegations directly with his constituents and his colleagues,” said Johnson, Majority Leader Steve Scalise, Whip Tom Emmer, and GOP Conference Chairwoman Lisa McClain in a statement.

“In the meantime, Leadership has asked Congressman Gonzales to withdraw from his race for reelection.”

Johnson, R-La., has been under enormous pressure from his own GOP lawmakers to take action, and several Republicans have already called for Gonzales to step aside. Rep. Anna Paulina Luna, R-Fla., has introduced two resolutions to punish Gonzales. The first seeks to remove him from his assignments on the House Appropriations and Homeland Security committees, while the second seeks to censure him.

House Democratic Leader Hakeem Jeffries of New York, meanwhile, said he would support expelling Gonzales from the House, a rare step that requires a two-thirds vote from the chamber.

GOP leaders notably did not call for Gonzales to resign from office as they struggle to maintain their slim majority in the House, which they hold by only a handful of seats.

Their move came after Gonzales, appearing on the “Joe Pags Show,” was asked whether he had a relationship with the aide, Regina Ann Santos-Aviles.

Santos-Aviles, 35, died after setting herself on fire in the backyard of her home in Uvalde, Texas. The Bexar County Medical Examiner’s Office later ruled her death a suicide.

“I made a mistake and I had a lapse in judgment, and there was a lack of faith, and I take full responsibility for those actions,” Gonzales said.

The congressman, now in his third term, had said he would not step down in response to the allegations, telling reporters recently that there will be opportunities for all the details and facts to come out.

Gonzales, a father of six, first won his seat in 2020 after retiring from a 20-year career in the Navy that included time in Iraq and Afghanistan.

In the interview broadcast Wednesday, Gonzales said he had not spoken to Santos-Aviles since June 2024. She died in September 2025.

“I had absolutely nothing to do with her tragic passing, and in fact, I was shocked just as much as everyone else,” Gonzales said.

Gonzales went on to say he had reconciled with his wife, Angel, and has asked God to forgive him. He also said he looked forward to the Ethics Committee investigation.

Johnson and GOP leadership urged that committee to “act expeditiously.”

Under House ethics rules, lawmakers may not engage in a sexual relationship with any employee of the House under their supervision.

Mascaro and Freking write for the Associated Press.