The electors already voted, I don’t think there is a remedy at this point.
We can get rid of a Democrat in the Senate if the evidence goes there should they look at all elections as some are wanting.
We can throw this in front of the voters every election for the rest of time.
Make for good ads when combined with that Foval character bragging about bussing in people for 50 years or Biden bragging about to scope of the election fraud machine.
Of course the Republicans wouldn’t go all scorched earth on the Democrats and Left as I certainly would try to, so “can” is unlikely to translate into a do.
Of course there is. A quo warranto case, 'by what authority', coupled with a Congressional Resolution of special election law to reverse results of 2021 election. That presumes the revised results are readily recoverable. The Resolution states a special inauguration date, and the honestly elected candidates take their new offices.