A) They will cheat so wildly that you can expect to see 250,000,000 'votes' for Biden.
B) And if A) doesn't work, they will kill him.
I think you can move your “B” up to the top of the list, as “A”; there is no “B”. They’re not going to waste their energy going through with an election if they have even an inkling Trump will win — and they have that inkling.