Provisional ballots are at the center of a dispute in Ohio that could prolong the election results well past Tuesday.

Ohio is once again one of the important swing states coveted by both candidates, and the Washington Post reports that poll results are too close to call in the battleground state.

Provisional ballots will not be tallied until Nov. 17, which means if the national race and Ohio is too close to call it could take until then to decide an outcome, The Columbus Dispatch reports.

If that does end up being the case, the legal teams of both parties could make it a hotly contested race even weeks after election day.