Even if the Trump regime is prevented from subverting the voting process, they will be unconstrained after November 3rd, because they'll have no more political cards to play unless they create some chaos. This is where the real danger lies. The fascists in the regime are at least constrained by political necessity right now. After the election, they literally have no political necessities, because its a lame duck administration with a hostile Congress, and Trump will see them as a means to an end.

Mark my words. In the week or so after the election, there will be major actions both within the US and in the war on the Middle East. New massive military action in Iran is my primary bet, with starting a new war with a different MIddle Eastern nation in second place (Perhaps Yemen?). Simultaneously, I expect a huge burst of blatantly unconstitutional domestic actions from the Trump regime, all of which are anti-democratic and most of which will never really be intended to survive the courts, but rather to make people confused and scared.