If the federal court has jurisidiction, then the matter is not entirely an issue of state law (unless there's diversity, not at issue here.) TO my knowledge, the 6th Circuit is presently taking up the issue of challenges within the polling place, and there's federal jurisdiction under a federal statute - I forget the name of the statute; it's some good government federal election law passed post Florida-2000.
Under the Supremacy Clause, if the 6th Circuit nixes challenges within the polling places, that trumps the state court.
"Under the Supremacy Clause, if the 6th Circuit nixes challenges within the polling places, that trumps the state court."
If that happens then it is time for Ohio to declare its independence from the union...LOL
Admittedly, my fed courts jurisdiction might be a bit rusty, but my perception was that this was a matter of state law before a federal district court. If the above statement is correct, then the federal court is bound to interpret the state law as it perceives a state court would do. Thus, a state supreme court can issue a contrary ruling and be the controlling authority. If I'm wrong on my presuppositions then I defer.