Brunner earlier obtained an order to extend voting 90 minutes in Sandusky County, in northwest Ohio, because of ballot shortages.
Officials received several reports of ballots running low because a larger-than-expected number of people are asking for Democratic ballots. Holding the polls open may mean a delay in election results being released.
In heavily Republican Warren County in southwest Ohio, election officials had to restock polling places with Democratic ballots.
The county was seeing considerable turnout at the polls and more people than usual were asking for Democratic ballots, said elections director Michael Moore.
He said the board had delivered extra Democratic ballots to the 172 polling places to keep up with the demand.
