Cecilia Castellano is a small-business owner and a relative political newcomer in South Texas.

A Democratic candidate for the Texas House of Representatives in a toss-up district, Castellano spends her days making the case for sending an outsider to Austin — and against her Republican opponent, Don McLaughlin Jr., who was endorsed by Donald Trump, Texas Gov. Greg Abbott and Texas Attorney General Ken Paxton even before his primary election.

Then, two weeks ago, law enforcement agents from Paxton’s office showed up around dawn at Castellano’s home outside San Antonio, armed with a search warrant and a flashlight they shined into her front window. She had answered the door in pajamas, and in the days since, she has found herself constantly checking the door.

“My son’s room was just a few feet away,” Castellano told HuffPost, still shaken two weeks […]