In a speculative three-way race with GOP Rep. Wesley Hunt, who is exploring a bid, the margin barely narrowed with the Cornyn trailing Paxton, 43 percent to 27 percent, with Hunt receiving 14 percent.

U.S. Sen. John Cornyn, R-Texas, is being challenged next year by Texas Attorney General Ken Paxton, a fellow Republican.

State Rep. James Talarcio, best known for going head to head with top GOP lawmakers over the infusion of religion in schools ...