The state legislatures have the power to accept the electors or reject them and seat their own.
Yes, they do, but they won’t because they are cowards.
This is really our only hope.
The courts, including SCOTUS, are not going to throw out fraudulent votes/ballots. The only thing they can, or will, do is to tell the states to follow their own state laws regarding elections in their states. Which means it's right back to the states...to do the right, lawful thing.
And, hoping that 1 Senator in addition to Rep Brooks challenges the states E.C. votes will almost certainly lead to failure in a Pelosi controlled house. Most voted to impeach Trump. No way they are going to reject Biden and put Trump back in power.
The state legislatures are really our only hope.