A top Georgia elections official says the largest share of outstanding votes looks to be ballots cast early in DeKalb County, a Democratic stronghold.

Gabriel Sterling also said Tuesday night that fewer than half of Georgia’s 159 counties had finished counting votes.

Sterling said as of about 9:30 p.m., 64 counties had finished counting absentee ballots, early in-person ballots and Election Day ballots. Most of them were smaller counties.

He says, “It’s going to be a long night for all the campaigns here.”

All eyes were on Georgia on Tuesday night for two runoff elections that will determine which political party controls the U.S. Senate. Republican Kelly Loeffler was taking on Democrat Raphael Warnock, while Republican David Perdue was going up against Democrat Jon Ossoff.

Democrats must win both races to take Senate control. Republicans only need to win one.

-The Associated Press