How exactly did the Democratic Party come to settle on a candidate with no credible capacity to serve as president? Who is Joe Biden fronting for, and who do they think they’re fooling? How can he possibly deliver an acceptance speech three weeks from now without giving away the game? That will be something to see — but I doubt we will actually see it. If the Dems don’t switch him out, there is no way Mr. Biden can survive the three-month homestretch of an election campaign. He can barely make it through a ten-minute appearance in front of twenty-three hand-picked partisans in a TV studio. Life imitates art, as Oscar Wilde tartly observed. The Manchurian candidate is truly here.