

They have for decades been at the forefront of cheating. Which party broke into their competitors offices to so on them? Who used the supreme court to stop the count in Florida, where after the fact it was found out they would have (narrowly) lost?
They know they cheat at every opportunity, so they need to accuse their opponents of the same.

Next Monday.
If he’s found dead or unable to conduct his duties before then, there’s a special election. If that happens after Monday, the seat simply remains vacant until it’s filled January with whomever wins the regular election.