AUSTIN, Texas (AP) — Texas Attorney General Ken Paxton is running for the U.S. Senate in a primary challenge against Republican Sen. John Cornyn, setting up what is likely to become one of the GOP’s most contentious and expensive contests of 2026.

Texas Attorney General Ken Paxton has launched his campaign for the 2026 Senate race to challenge Sen. John Cornyn. “It’s definitely time for a change in Texas,” Paxton said Tuesday in an interview on Fox News.

Texas Attorney General Ken Paxton’s decision to challenge Sen. John Cornyn sets up what’s likely to be a bitter and expensive Republican primary – and a battle for President Donald Trump’s endorsement.