WASHINGTON — Republican Sen. Thom Tillis of North Carolina said Sunday he will not seek reelection next year, an abrupt announcement that came one day after he staked out his opposition to President Donald Trump’s tax breaks and spending cuts package because of its reductions to health care programs.

His decision creates a political opportunity for Democrats seeking to bolster their numbers in the 2026 midterm elections, creating a wide-open Senate race in a state that has long been a contested battleground. It could also make Tillis a wild card in a party where few lawmakers are willing to risk Trump’s wrath by opposing his agenda or actions. Trump had already been threatening him with a primary challenge.

“In Washington over the last few years, it’s become increasingly evident that leaders who are willing to embrace bipartisanship, compromise, and demonstrate independent thinking are becoming an endangered species,” Tillis said in a statement.

Tillis, who would have been up for a third term, acknowledged the difficult political environment for those who buck their party and go it alone.

— The Associated Press