Donald Trump has backed Ken Paxton for Texas Senate, intensifying a Republican battle. This move alarms party leaders who fear Paxton's controversies could jeopardize the seat. The endorsement highlights Trump's sway over the GOP. Democrats see an opportunity as Republicans grapple with internal conflict and potential resource drain. The race is now a key test of Trump's influence.

President Donald Trump has endorsed Texas Attorney General Ken Paxton, supercharging his effort to oust incumbent Sen. John Cornyn in a Republican primary runoff.

Donald Trump will announce who he is backing in the Texas Senate race, which features Sen. John Cornyn and state Attorney General Ken Paxton.