Judge J Michael Luttig, Republican constitutional lawyer and the man who Pence consulted over the plot to overturn the electors, has said the ruling is a masterful piece of constitutional law and should be upheld as it is not a political ruling.
He has said it's not certain it won't be overturned, but it is correct in his opinion.
What people seem to forget is that the judges on the Supreme Court are already under scrutiny over who their backers are and it wouldn't be inconceivable for their conservative backers to see this as a chance to rid themselves of Trump and his ability to lose elections. Just look at who is backing Nicki Haley and how she's emerging as Trump's biggest foe in the primaries. She's a much less controversial conservative pick who would have more chance of furthering the real conservative agenda which has been neigh on impossible under the cult of Trump. Having the Supreme Court uphold this ruling would wipe Trump from the board and serve to do the dirty work that moderate Republicans have been terrified to do because they know they would be primaried simply for standing up to Trump.