Neither candidate will be accepted as the legitimate President by a large minority of Americans. There is no way out of this mess. Antifa would fight quicker if Biden is denied, but patriots will fight soon enough if Trump is denied.
That's really what it's going to come down to.
Trump voters don't believe that Biden won fair and square.
Biden voters don't believe it either but they don't care. After all, fraud is OK to keep Hitler out of power.