Races to watch in Texas’s primary runoffs: Cornyn-Paxton, Chip Roy’s attorney general bid, House contests

Sen. John Cornyn (R-Texas) will be in the fight of his political life Tuesday, as he looks to defy the odds and defeat Texas Attorney General Ken Paxton, who clinched an endorsement from President Trump, in the Senate GOP runoff.  The last-minute support tees up another test of Trump’s influence in a Republican primary. The president has already successfully picked off several…