If Biden takes the states where he's already been declared the winner (238), plus Nevada (6), Wisconsin (10), and Michigan (16), that's an exact electoral college tie (270).

That certainly would be the maximum civil war scenario.

Did the Republicans keep enough House seats to win a contingent election? They still have the Senate, so Pence would still be VP.

(Oops, miscounted, that would be a 1 vote Biden win.)