This will happen in Blue states. Trump only needs 270 electoral votes so they can play any of the games they wish and it will not matter.Not sure how this is going to play out in swing states like MI, WI, PA, MN, NC and NH.
You have to factor in who the governors are, who the SOS's are, who controls the legislatures and the courts and what the laws are, in each state.
And then of course there is the Chief Justice of the SC, Roberts.
I am in PA. The Republican party seems to have a large ground game for mail in votes. The mail in votes are not going to be 100% Biden. Biden does not have enough enthusiasm. He is a rotten fish in the room. The democrat party just declared the ability to change any law they want to until the end of November becasue of COVid. That is now moving past annoyance to anger and even beyond to rage.