Briefnow
May 26, 2026

Thune Breaks With Trump, Backs Cornyn After Paxton Endorsement

Senate Majority Leader John Thune said Tuesday he will continue supporting Sen. John Cornyn despite President Donald Trump endorsing Texas Attorney General Ken Paxton in one of the most closely watched Republican Senate primaries of the 2026 cycle.

Speaking to reporters following Trump’s endorsement announcement, Thune praised Cornyn as “a principled conservative” and an “effective senator” for Texas, signaling a rare split between Senate Republican leadership and the president.

“Cornyn is a principled conservative. He is a very effective senator for the state of Texas,” Thune said.

“None of us can control what the president does. That doesn’t change the way I feel. I will continue to be supportive of Senator Cornyn in his re-election,” Thune added.

The comments came just hours after Trump formally endorsed Paxton on Truth Social, delivering a major boost to the Texas attorney general as he seeks to unseat Cornyn in the Republican runoff election.

In his endorsement, Trump criticized Cornyn for insufficient loyalty during politically difficult periods of his presidency.

“Ken Paxton has been a warrior for Texas values and for our America First agenda,” Trump wrote. He added that Cornyn “was not supportive of me when times were tough.”

The endorsement immediately intensified an already bitter and nationally significant Republican primary battle that has exposed growing tensions inside the GOP between establishment Senate Republicans and Trump-aligned populists.

Early voting in the runoff began Monday and continues through Friday, with Election Day set for May 26.

Despite the internal divisions, Thune expressed confidence Republicans would retain control of the Senate in November.

“I’m very confident we’ll hang on — and maybe even expand the majority of the United States Senate,” Thune said.

Republicans currently hold a six-seat Senate majority. Democrats would need a net gain of four seats to retake control of the chamber.

Several races, including contests in Maine, Michigan, and North Carolina, are currently viewed as highly competitive.

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