WASHINGTON — Sen. Thom Tillis, R-N.C., announced Sunday that he would not run for re-election, one day after he drew President Donald Trump’s ire for opposing the party’s sweeping domestic policy package.

The decision opens up seat in battleground North Carolina that was already expected to be one of the most hotly contested races of the 2026 midterms.

Tillis issued a lengthy statement about his decision, saying he has not been enthusiastic about seeking a third six-year term in the Senate.

“As many of my colleagues have noticed over the last year, and at times even joked about, I haven’t exactly been excited about running for another term,” Tillis said. “That is true since the choice is between spending another six years navigating the political theatre and partisan gridlock in Washington or spending that time with the love of my life Susan, our two children, three beautiful grandchildren, and the rest of our extended family back home. It’s not a hard choice, and I will not be seeking re-election.”

After Tillis voted against advancing the GOP’s massive domestic policy bill Saturday, Trump attacked him in a series of social media posts and threatened to meet with potential primary challengers.

“Thom Tillis is making a BIG MISTAKE for America, and the Wonderful People of North Carolina!” Trump wrote on Truth Social on Saturday night.

Tillis compared himself to former Democratic Sens. Joe Manchin of West Virginia and Kyrsten Sinema of Arizona — both of whom became independents by the end of their tenures — without explicitly naming them, saying that independent voices attract scorn in politics.

“Democrats recently lost two such leaders who were dedicated to making the Senate more of a functional and productive legislative body. They got things done. But they were shunned after they courageously refused to cave to their party bosses to nuke the filibuster for the sake of political expediency. They ultimately retired and their presence in the Senate chamber has been sorely missed every day since,” Tillis said.

“It underscores the greatest form of hypocrisy in American politics. When people see independent thinking on the other side, they cheer. But when those very same people see independent thinking coming from their side, they scorn, ostracize, and even censure them,” he continued.

Even prior to Tillis’ announcement, the North Carolina seat was a top target for Democrats as they seek to cut into the GOP’s 53-47 majority next year.

“Thom Tillis’ decision not to run for reelection is another blow to Republicans’ chances as they face a midterm backlash that puts their majority at risk,” Democratic Senatorial Campaign Committee spokesperson Maeve Coyle said in a statement. “Even Tillis admits the GOP plan to slash Medicaid and spike costs for families is toxic — and in 2026, Democrats will flip North Carolina’s Senate seat.”

Democrats are hopeful they can recruit former Gov. Roy Cooper to enter the contest, which already features former Rep. Wiley Nickel.

“No matter which MAGA loyalist Donald Trump hand-picks to run in North Carolina, I’m the Democrat who’s ready to take them on and win,” Nickel said in a statement Sunday. “I’ve flipped a tough seat before and we’re going to do it again.”

National Republican Senatorial Committee Chairman Tim Scott expressed confidence the GOP would still be able to defend the seat without Tillis in the race.

“President Trump has won North Carolina three times, and the state’s been represented by two Republican Senators for over a decade,” Scott said in a statement. “That streak will continue in 2026 when North Carolinians elect a conservative leader committed to advancing an agenda of opportunity, prosperity, and security.”