I think the courts can nullify the election, set it aside. But they likely cannot order a 'revote', that would be for the legislature to decide.
Should the courts set aside the governor's election and should the democrat controlled legislature fail to authorize a revote, they would be risking their seats to voter anget in the next election.
But the state supreme court is mostly democrat. They will not support a set aside. The 9th district will likely turn down a hearing. The US Supreme Court may hear the case if it addresses Bush vs. Gore equal protection issues. But the USSC cannot order a revote as well, only nullify the existing vote.
Voter Anger? Next election?
Yes, I would remember something like this. Yes, I'd be plenty PO'd. Unfortunately, I don't credit my fellow man with the same gift of memory.
Four years is an eon in our society. No one will care four years from now. Once Fraudoire furor is over, this will have no impact on the next election. State legislators are pretty anonymous once they get to the Statehouse. I'd bet this issue won't cost a single seat in the next elections.
The best bet is that Fraudoire will not be able to govern effectively, which MIGHT get her tossed from office.