Trump endorses Ken Paxton in Texas Senate runoff

Donald Trump endorsed Texas Attorney General Ken Paxton in the Republican Senate runoff on Tuesday, handing Paxton a late boost against Senator John Cornyn and sharpening the contest into a direct test of Trump’s grip on the party ahead of the midterms.

What was already a costly race is now a choice between an incumbent senator and a challenger who has made proximity to Trump the heart of his campaign. Reuters first reported the endorsement. The Texas Tribune noted the March primary left Cornyn at 42 per cent and Paxton at 40.5 per cent — tight before Trump weighed in, and tighter now that the runoff carries an explicit presidential choice.

Trump, in a statement carried by Reuters, described Paxton as an ally who had stayed aligned with his political movement.

“Ken is a true MAGA Warrior who has ALWAYS delivered for Texas, and will continue to do so in the United States Senate.”

— Donald Trump, via Reuters

For Paxton, the endorsement supplies a fresh argument in the runoff’s closing stretch: the race is now a referendum on which Republican sits closer to Trump. That pitch lands harder in a two-man contest than it did in a crowded primary.

Cornyn answered with an electability case. Speaking through Reuters, he said Republican voters should weigh the rest of the party’s November ticket as heavily as the primary fight itself.

“It is now time for Texas Republican voters to decide if they want a strong nominee to help our GOP candidates down ballot and defeat Talarico in November, or a weak nominee who jeopardizes everything we care about.”

— John Cornyn, via Reuters

Stakes for Cornyn

How narrow was the gap before Trump stepped in? Cornyn’s 42 per cent put him only 1.5 points ahead of Paxton, according to the Texas Tribune’s account of the primary result. The same report said the primary and runoff had already drawn nearly $125 million in advertising, a figure that reflects how large the stakes have grown inside the party — and how expensive it has been for both camps to define the other before voters return for a head-to-head finish.

Both men had months and millions to define each other for Republican voters. Cornyn used that stretch to argue that Senate experience and general-election strength still matter. Paxton used it to argue the party should reward the candidate closer to Trump’s instincts. The endorsement lands on top of that expensive fight rather than starting it from scratch.

Paxton moved quickly to use the endorsement as a loyalty argument. In a statement reported by the Texas Tribune, Paxton said he had remained with Trump when “the Washington establishment and career politicians like John Cornyn turned their back on the President.”

“I have consistently stood by President Trump, even when the Washington establishment and career politicians like John Cornyn turned their back on the President.”

— Ken Paxton, via The Texas Tribune

That line captures the runoff’s shape. Cornyn is asking Republicans to value Senate experience, party strength down the ballot and the argument that he is the safer general-election nominee. Paxton is asking them to treat allegiance to Trump as the main measure. Trump’s endorsement seals that split.

What the endorsement changes

Trump’s backing matters in Texas because his standing with Republican voters there is deep. NPR reported that Trump carried the state by nearly 14 percentage points in the 2024 presidential election. That margin does not decide a Senate runoff on its own, but it explains why neither campaign treated Trump’s position as a side issue. Once he chose Paxton, Cornyn could no longer frame the race as a contest that sat above the party’s internal loyalty test.

The timing compounds the effect. With the larger field gone, Republican voters now have two names on the ballot, and one of them carries a fresh presidential endorsement. That compresses the decision into a single question: can incumbency and electability still outrun Trump’s preference in a state where he remains popular with the GOP base.

Cornyn still holds the advantages of incumbency, and Texas Republicans may yet decide that experience is the safer choice in a one-on-one race. Paxton can now claim the party’s dominant national figure is on his side. In a state Trump won comfortably two years ago, that is a serious problem for any Republican trying to survive a challenge from the right.

Republican voters face a cleaner decision than they did before Tuesday. Cornyn offers continuity and a warning about November risk. Paxton offers movement politics with Trump’s approval attached. The runoff will show whether an incumbent senator can still hold ground once Trump makes his preference explicit in one of the country’s biggest Republican states.