Controversial Texas Attorney General Ken Paxton challenged Sen. John Cornyn's reelection and won President Trump's endorsement in the bitter primary fight that cost Republicans more than $100 million.

Paxton faces Democrat James Talarico in the general election.

Controversial Texas Attorney General Ken Paxton is challenging U.S. Sen. John Cornyn's reelection. The $100 million fight could have far-reaching implications for the GOP, and…