He wouldn't need any 'capacity' at all, if he wanted to run he would have an AI robot do all of his campaigning. He'd just sit on a couch and eat Cheetos while constantly sending out all-cap Tweets.
But he knows he won't run again if he loses, because he will be in jail. Which is why, in his mind, if he cannot lose. He will declare complete victory (in a "landslide") regardless of the outcome. I foresee it will all come down to some sort of bunker-like last days in which it will all come to a violent end, if a stroke doesn't take him out first.
You have the makings of an Oscar-winning movie plot there! I like it