The 2026 United States Senate election in Texas, scheduled for November 3, 2026, will pit Republican Attorney General Ken Paxton against Democratic State Representative James Talarico. Incumbent Republican John Cornyn lost his bid for a fifth term, becoming the first Texas senator to lose renomination since 1970 after Paxton defeated him with 63.8% of the vote in a May 26 runoff, a victory heavily aided by a late endorsement from Donald Trump. Talarico secured the Democratic nomination with 52.4% of the vote over Congresswoman Jasmine Crockett. The contentious Republican primary highlighted a deep divide between the party's establishment and its hardline conservative wing, with Paxton attacking Cornyn over Ukraine aid and gun safety, while Cornyn cited Paxton's legal troubles and 2023 impeachment. Since Democrats haven't won a Senate seat in Texas since 1988, this race serves as a major test of the state's shifting political dynamics, especially given recent Republican gains among Hispanic voters and Trump's 14-point victory in the 2024 presidential election.