Depends who is on the elections board. If the fasc have stacked them they can do anything they want. The voters in those states have zero power. It is no longer a "republican form of government" as guaranteed by the Constitution. But the stooges on the McConnell Court will allow it.
If it changes the election result, well, that's how you get tanks in the streets. But even that is something the Right wants. They can't win fair elections, so they want to end elections. "A revolution, bloodless if the liberals allow it." It's a coup d'etat. Every Republican will be on board with it. They have zero sense of civic responsibility, they just want power and their party and donors just want to smash and grab.
This has always been the reductio ad absurdum of conservatism, since Reagan. It just took about a half century to get here.