Right?! I mean, honestly, how long would it take to schedule a "do-over"? There's no precedence for something like that.
Even during Watergate, they knew something was f'ed up (not that I'm saying that it is or isn't here) before the '72 election and '73 reinnaugeration, they had to go after Nixon via impeachment (which, of course, he resigned before that could be completed).