Matt Boyle story:

The Mississippi law Adams cites, MS Code 23-15-575, states: “No person shall be eligible to participate in any primary election unless he intends to support the nominations made in which he participates.”

“Mississippi law prohibits Democrats from voting in a Republican primary,” Adams said in an emailed statement. “Obviously poll workers aren’t mind readers. But if someone doesn’t intend to support the nominee in November, then that person isn’t allowed to vote in the Republican primary.”