Tucker Carlson Calls Him the Future of the GOP. First He Has to Get Elected.

Blake Masters steps in front of the hundred-person crowd at a barbecue here, two-year-old son balanced in one hand and microphone in the other, awaiting what could be the most important phone call of his life.

The event is billed as a “debate” with Arizona Attorney General Mark Brnovich, one of the main rivals for the GOP’s Senate nomination. Two men loom over the proceedings unseen, but Brnovich isn’t one of them: He never accepted the invitation, and nobody expects him to show up. The whole thing, complete with a...