Texas voters will see something they've rarely seen this century thanks to Attorney General Ken Paxton. When the Republican announced last week that he would run for the U.S. Senate, it set the stage for just the third open-seat battle for the attorney general's office since the year 2000.

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.