Texas Attorney General Ken Paxton’s attempt to topple Republican Sen. John Cornyn in a Senate primary next year kicks off one of the most intense contests of the 2026 elections — a GOP-versus-GOP battle between two men who have been sparring for years and vying for President Donald Trump’s attention.

Texas Attorney General Ken Paxton, a close ally of President Donald Trump, announced Tuesday he will challenge Sen. John Cornyn (R-Texas) in the 2026 primary.

Texas Attorney General Ken Paxton announced his bid to challenge current Sen. John Cornyn in the state's 2026 Republican primary election.

Texas Attorney General Ken Paxton has announced his entry into the U.S. Senate race against Republican Sen. John Cornyn in what will be one of the country’s most contentious 2026 primary contests

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.

Republican Texas Attorney General Ken Paxton said on Tuesday he will challenge Republican U.S. Senator John Cornyn from Texas in the 2026 primary, adding he will support President Donald Trump's agenda.