The Republican refrain goes something like this: Democrats know Joe Biden can’t win in November and they — it’s always “they” — are going to replace him on top of the ticket. Anyone around politics has heard it — and the assured predictions have reached a crescendo following the release of the special counsel’s report on Biden and the 2x4 to the head therein. On Sunday even Nikki Haley‚ ostensibly the GOP’s Team Normal candidate for president‚ put down her cash at the window. “My bet is...