Assuming but not required to go along party lines. Several of these states could choose to go with what they perceived to be the original certified choice which was biden. I don’t trust PA, MI, GA or WI to do the right thing.
Of course assuming, it's why I stated such.
The goal, at that point, would be to tie up in courts, the electors from being certified to the feds on time. Thus, neither candidate gets to 270 and therefore the 1 vote per state in the fed congress.