WASHINGTON — President Donald Trump is done watching from the sidelines.
In a pointed post on his social media platform Wednesday, Trump declared that the fiercely contested Texas Republican Senate primary “cannot go on any longer” — and promised an endorsement is imminent. Once he picks a side, he said, the other candidate must go.
“I will be making my Endorsement soon, and will be asking the candidate that I don’t Endorse to immediately DROP OUT OF THE RACE!” Trump wrote.
The announcement electrified a race already crackling with tension between Sen. John Cornyn, a four-term Republican incumbent, and Texas Attorney General Ken Paxton, a conservative firebrand with deep roots in the MAGA movement.
Tuesday’s primary produced no clear winner. Both Cornyn and Paxton fell short of the 50% threshold required to avoid a runoff, pushing the contest into May. Republican Rep. Wesley Hunt, also in the race, has since conceded.
Trump, who throughout the primary had carefully avoided taking sides — publicly calling Cornyn, Paxton, and Hunt all “excellent” candidates and his “friends” — appeared to shift tone sharply on Wednesday.
“Both John and Ken ran great races, but not good enough,” Trump wrote. “Now, this one, must be PERFECT!”
GOP Leadership Lines Up Behind Cornyn
Senior Senate Republicans wasted little time making their preferences known.
Senate Majority Leader John Thune said he spoke with Trump on Wednesday and made the case for Cornyn, though he acknowledged the president “makes his own decisions.” Thune framed an early endorsement in purely strategic terms: avoiding a bruising, expensive ten-week runoff battle that drains resources needed for the general election.
“If the president can weigh in, it would be enormously helpful,” Thune said.
Senate Republican Whip John Barrasso was equally direct. He pointed to elevated Democratic voter turnout on Tuesday night as a warning sign, arguing the GOP cannot afford a divisive prolonged primary.
“We need to nominate somebody who attracts voters across the state of Texas, and that’s John Cornyn,” Barrasso said.
Cornyn and his allies have already spent more than $70 million on advertising, according to tracking firm AdImpact — a figure that underscores how high the financial stakes have already climbed.
The Texas Senate seat carries weight well beyond state lines. Republicans currently hold narrow majorities in both the House and Senate, and every competitive seat matters heading into the midterm cycle.
The winner of the GOP runoff will face Democratic State Rep. James Talarico, 36, a Presbyterian seminarian and former teacher who defeated Rep. Jasmine Crockett in Tuesday’s Democratic primary.
Paxton, despite his popularity within Trump’s base, has been shadowed by a series of scandals throughout his tenure as attorney general — a factor Republican leaders privately cite as a liability in a general election matchup. [Suggested Link: Ken Paxton political controversies]
Trump’s High-Stakes Calculation
Trump’s post struck a tone of urgency rarely seen in primary endorsements. He described Texas as a state he “LOVE[s]” and won three times, and framed unity as a necessity — not a courtesy.
“We have an easy to beat, Radical Left Opponent, and we have to TOTALLY FOCUS on putting him away, quickly and decisively!” he wrote. [Suggested Link: Texas 2026 Senate general election outlook]
Whether his eventual endorsement lands with Cornyn — the establishment’s choice — or Paxton — the base’s favorite — the president is signaling that the time for open competition has passed. In Trump’s world, the primary is now over. Someone just hasn’t gotten the memo yet.
What Comes Next
The May runoff between Cornyn and Paxton now hinges heavily on which direction Trump points. A presidential endorsement in a Texas Republican primary is widely considered decisive among the party’s core voters.
Thune made clear that Senate Republicans view the situation as urgent — and that they believe every week without resolution is a week the party falls further behind in the general election battle to follow. The endorsement, whenever it arrives, will almost certainly reshape the race overnight.
