UVALDE, Texas (AP) — Just hours after voting started in Texas, Kimberly Rubio cast her ballot in the same Uvalde city building where she waited in May to learn that her daughter, Lexi, was one of 19 fourth-graders fatally shot at Robb Elementary School.

"If our children aren't safe, neither are your jobs," Rubio said as she walked out of her polling place with an "I voted" sticker. Nearby, another woman waved a "Don't tread on me" flag.

The deadliest classroom shooting in Texas history has cast a long shadow in the midterm elections, intensifying Republican Gov. Greg Abbott 's campaign against...