Just exactly WHO is going to be SUBSTITUTED for BIDEN ? He surely aint the real candidate. What is the latest timeframe  that a substitute presidential candidate can be installed in place of Biden ?? Is it only Harris and if he gets ill / incapacitated etc ?  Or are there other reasons valid too ?? Or can a witch like Hillary or Moochelle be slid in there or is it now too late for that ? This whole american election thing seems so flakey ,sketchy and contrived in so many different ways Would be nice to get some answers from someone who actually KNOWS their stuff , to be able to understand a bit better