Ken Paxton, the current Texas Attorney General and an ultraconservative candidate backed by Donald Trump, has defeated incumbent Senator John Cornyn in the Republican primaries held on Tuesday, May 26, 2026. The outcome of this contest in the deeply conservative state underscores Trump's enduring sway over Republican political careers, even as his broader influence faces challenges.

This victory, propelled by Trump's endorsement, positions Paxton to run for a Senate seat in the upcoming November midterm elections, a development that has left some within the Republican Party apprehensive. The race was marked by significant financial expenditure, with reports indicating over $90 million spent by Cornyn's campaign alone, amidst a total campaign spending that may have set historical records for a US primary.

Paxton, 63, has cultivated a reputation as a staunch conservative on issues spanning immigration, abortion, religion, and gun rights. His alignment with Trump, however, comes with a shadow of controversy. He faces accusations of corruption, and his hardline stances, particularly against the LGBTQ+ community, have drawn considerable attention.
Read More: Christian Menefee Wins Texas Primary Runoff, Ousts Al Green

The implications of Paxton's win are not lost on the opposition. Democrats are reportedly "jubilant," seeing his nomination as a potential opening to secure a Senate seat in Texas for the first time in over three decades. Warnings had been issued by some Republican leaders, including Senate Majority Leader John Thune, that challenging incumbent senators could prove detrimental in the midterm elections, potentially complicating the implementation of their party's agenda.

This primary contest in Texas serves as a potent illustration of Trump's influence in the post-presidency era. Despite potential erosion in his grip on the Capitol, evidenced by frustrations over foreign policy and domestic initiatives, his ability to shape primary outcomes remains a significant factor in Republican politics. The decision to back Paxton over a sitting senator who had previously diverged from Trump's line signals a clear message from the former president regarding loyalty and ideological adherence.
Read More: Trump-backed candidate wins GOP nomination in new district