While David “Dave” McCormick continues his dogged march through Pennsylvania’s seemingly infinite V.F.W. halls and Bucks County diners, Mehmet Oz is gearing up for a Friday rally with his most valuable supporter Donald Trump, whose recent endorsement in the Ohio G.O.P. Senate primary just propelled late MAGA convert J.D. Vance from a meager third place to a resounding victory. Vance, of course, was previously unpopular with diehard Trumpists—whose idol he once called “noxious” and “an idiot”—and remains quietly disliked by the Republican establishment in Washington. But a Trump nod (plus the approval of Tucker Carlson) hides a multitude of sins.