Texas Attorney General Ken Paxton is not on the March Primary ballot, but he’s been active in the race, campaigning around the state for Republican candidates challenging some House members who voted to impeach him. But Paxton is also mounting a different campaign effort that could have a more significant impact. He is backing challengers to three Republican judges who currently serve on the Court of Criminal Appeals, the state’s highest criminal court. It comes after those judges ruled the Texas Constitution prevents Paxton from prosecuting voter fraud cases. In an interview Wednesday, Paxton called the decision “ludicrous” and urged...