Texas GOP Civil War — Who Survives?

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Texas Attorney General Ken Paxton has drawn a line in the sand, declaring he will continue his fight to unseat establishment Senator John Cornyn even if President Trump backs his opponent in the May 26 Republican runoff.

Story Highlights

Paxton vows to stay in the Senate race regardless of Trump’s endorsement, calling Cornyn “Fake John Cornyn”
March 3 primary forced a runoff after neither candidate secured a majority, triggering the first renomination challenge to Cornyn in 24 years
Polls show Paxton holds 62% approval among Texas conservatives compared to Cornyn’s 45%, with Trump’s endorsement capable of swinging 10 points
The race represents a critical battle between grassroots conservative values and establishment politics, with over $100 million expected to be spent

Establishment Versus Conservative Principles

Ken Paxton’s defiant stance represents a growing frustration among Texas conservatives who believe establishment Republicans have failed to deliver on core promises. Paxton announced his Senate bid in April 2025 after serving as Texas Attorney General, positioning himself as the change candidate against Cornyn’s 22-plus years in Washington. This challenge exposes a fundamental divide within the Texas GOP between hardline conservatives who prioritize traditional values and the business-oriented establishment wing that has dominated state politics for decades. Paxton enjoys strong conservative support, with University of Texas polling showing 62% approval among conservative voters compared to Cornyn’s 45%.

Primary Results Force May Showdown

The March 3 primary election delivered results that establishment Republicans hoped to avoid. Neither Cornyn nor Paxton secured the majority needed to win outright, forcing a May 26 runoff in what marks Cornyn’s first serious renomination challenge since entering the Senate. Representative Wesley Hunt finished third, with his vote share contributing to the split that prevented an outright winner. University of Houston Hobby School polling conducted before the primary showed Paxton edging Cornyn slightly, with 36% of Republican voters saying they would “definitely consider” Paxton versus 32% for Cornyn. The Associated Press confirmed the runoff will take place during the final weeks of May.

Trump’s Endorsement Remains Wild Card

President Trump’s potential endorsement has become the pivotal factor that could determine the race’s outcome. Republican strategists estimate Trump’s backing could swing the race by 10 percentage points, making his decision crucial for both candidates. However, Paxton made clear he believes he can win without Trump’s support, stating “We’re going to win… even without Trump.” GOP consultants like Vinny Minchillo and Alfredo Rodriguez have urged Trump to make a “business decision” favoring Cornyn, arguing this would free up over $200 million in campaign resources that could be redirected to battleground states like Michigan and North Carolina. Trump has indicated he will announce his endorsement “soon,” leaving both campaigns in suspense.

Cornyn’s Record Under Conservative Scrutiny

Senator Cornyn’s long tenure has provided ammunition for critics who question his conservative credentials on key issues. While Cornyn aligned with Trump’s agenda 92% of the time during his first term and supported tax cuts and conservative judicial nominees, he has also backed Ukraine aid and participated in gun violence negotiations that concerned Second Amendment advocates. These positions have led Paxton to label him “Fake John Cornyn” and question his commitment to true conservative principles. Cornyn entered the race with $4.1 million cash on hand and has defended his record as a “battle-tested conservative” who has delivered for Texas, but his establishment ties remain a liability with the grassroots base energized by America First policies.

High Stakes for Texas and National Politics

The Paxton-Cornyn runoff carries implications far beyond Texas borders. Political observers expect this to become one of the most expensive Senate primaries in history, potentially exceeding $100 million in total spending. This resource drain concerns national Republicans who need funds for competitive general election races. Democratic strategist Matt Angle has noted that prolonged GOP infighting benefits his party by weakening the eventual nominee and diverting resources. If Paxton wins, it would signal the dominance of the conservative hardliner faction within the Texas GOP and could reshape Senate leadership dynamics. The race serves as a critical test of whether grassroots conservatives can successfully challenge establishment incumbents who have strayed from core principles, including limited government and constitutional fidelity.