State leaders have prided themselves on finding bipartisan consensus, but President Trump’s deployment of National Guard troops from Texas to Illinois has ripped the veneer off that image.

© Jamie Kelter Davis for The New York Times

Mr. Hunt, a U.S. House member, and Senator John Cornyn will be competing for voters who dislike the state’s attorney general, Ken Paxton, who has led in many polls.

© Kenny Holston/The New York Times