President Trump's endorsement of state Attorney General Ken Paxton over four-term Sen. John Cornyn gives the challenger a late boost and puts Cornyn at risk of becoming the first Republican senator in Texas history to seek the party's nod and lose.
That's despite Cornyn's campaign and allied groups spending roughly $90 million in advertising since last year, the vast majority of it attacking Paxton.
It's the latest GOP contest where Trump has sought to punish a Republican he sees as insufficiently loyal. This month, he has successfully backed challengers to incumbents in Louisiana,Kentucky and Indiana, a sign of his enduring influence among primary voters.
Trump blasted Republican Louisiana Sen. Bill Cassidy as “a Disloyal Disaster” on May 16, before Cassidy lost a GOP primary for the office he has held since 2015. The two-term senator had voted to convict Trump after his 2021 impeachment trial over the Jan. 6, 2021, attack on the U.S. Capitol. Trump backed U.S. Rep. Julia Letlow, who advanced to a runoff with John Fleming, the state treasurer. Cassidy finished well behind them.
Last week, Trump celebrated as Kentucky Rep. Thomas Massie, a critic of the Trump administration's handling of the Jeffrey Epstein files, lost his primary to Ed Gallrein. Trump called Massie "the worst congressman in the history of our country.”
In endorsing Paxton, Trump said Cornyn “was not supportive of me when times were tough" and that “John was very late in backing me."
Cornyn suggested in 2023 that Trump could not win the presidency again in 2024 and that his “time has passed him by.” He also was an early critic of Trump's plan for a border wall between the U.S. and Mexico — a project he now supports.
Paxton's campaign and a pro-Paxton super PAC began airing ads promoting the endorsement within 24 hours of Trump's announcement. Cornyn acknowledged Trump's move would have an impact but said he wasn't giving up.
“I know who gets to choose our senators, and it’s the people of Texas,” he said hours after the endorsement.
The winner will run in November against Democratic state Rep James Talarico.
