Full Breakdown
Texas GOP Senate Runoff: Paxton vs. Cornyn After Trump’s Endorsement
5/25/2026, 1:18:57 PM
Core Event: Primary Runoff Forecast
On May 21, 2026, Texas Republican voters will select the nominee to face Democrat James Talarico in November. The contest pits incumbent Senator John Cornyn against Attorney General Ken Paxton. Prediction markets show Paxton with a 90 % chance on Kalshi and 96 % on Polymarket.
Background & Context: Paxton’s Legal History and Cornyn’s Record
Ken Paxton’s tenure as attorney general includes a 2015 fraud charge dismissed after community service, a 2020 whistleblower lawsuit that led Texas to pay $6.6 million to former aides, and a 2023 impeachment by the Texas House followed by Senate acquittal with Trump’s support. John Cornyn, a 23-year Senate incumbent, has faced criticism from Trump supporters for voting with Democrats on a 2022 gun-control measure and for perceived insufficient loyalty.
Timeline of Endorsement and Market Reaction
Donald Trump weighed the endorsement in early May, announced support for Paxton on May 19 via Truth Social, and the next morning Kalshi’s odds jumped to roughly 90 % for Paxton and 10 % for Cornyn.
Official Statements & Responses
Trump’s Truth Social post endorsed Paxton, noting Cornyn’s lack of support during “tough times.” Cornyn’s campaign responded with a six-minute advertisement highlighting his legislative record and accusing Paxton of corruption. Paxton’s spokesperson framed a 2018 $1,000 Montblanc pen incident as a misunderstanding after the pen was returned.
Criticism & Opposition
Republican strategists, including former land commissioner Jerry Patterson, warned that Paxton’s nomination could alienate moderate voters and make the general election competitive. The Cook Political Report said a Paxton win would likely turn Texas into a fully competitive Senate race. Cornyn supporters cite his bipartisan votes as evidence of electability.
On-the-Ground Reports
At Matt’s Rancho Martinez in Allen, patrons celebrated Trump’s endorsement with spontaneous “Y.M.C.A.” singing, free margaritas, and shouts of “We did it!” and “I have chills!”
Conflicting Reports & Gaps
Sources differ on Paxton’s legal outcomes: some describe charges as dismissed, others note impeachment acquittal, while additional investigations remain ongoing. No polling beyond prediction markets is provided, leaving voter sentiment unclear.
Verbatim Quotes
- “John Cornyn is a good man, and I worked well with him, but he was not supportive of me when times were tough,” — Donald Trump, Truth Social post
- “We did it!” — Man with slick-back hair, Allen, Texas
- “We’ve got bigger fish to fry!” — Eric, Allen, Texas
- “we’re in deep kimchi, which is Korean for ‘shit,’” — Jerry Patterson, former Texas land commissioner
What’s Next: General Election Outlook
If Paxton wins the primary, he will face James Talarico in November. Analysts say the race could become Texas’s most competitive Senate contest in decades, offering Democrats a realistic chance.
