3) no need to hold elections anymore, declare emergency, martial law, etc
4) even if they do hold elections, the GOP controls the FEC and soon to be post office.
So there will be "elections."
Currently (3) doesn't seem very likely. Things would have to deteriorate a lot further before that became plausible. But I can't see why Trump would have seized control of the FEC (and post office) in the way he has if he and the GQP weren't intending to make use of that power, so it's quite likely something bad is going to happen in that respect.

