Abrams, who would be the nation's first black female governor, addressed her supporters early Wednesday morning, telling them: "I'm here tonight to tell you votes remain to be counted. There's voices that are waiting to be heard."
CNN received a statement from Abrams' campaign saying they're holding off on conceding to see if a runoff — another election or race — is possible. A runoff will be required if neither Abrams or Brian Kemp gets the majority-vote margin they need to win the race outright.
The statement CNN received from Abrams' campaign cited multiple instances that could result in a runoff including:
"...three of the state's largest counties that 'have reported only a portion of the votes that were submitted by early mail' and four other large counties that 'have reported exactly 0 votes by mail,' according to the campaign. Together, it said, the seven counties 'are expected to return a minimum of 77,000 ballots.'"
"These counties also represent heavily-Democratic leaning constituencies, and the majority of those votes are anticipated to be for Stacey Abrams," the statement continued.
As the Atlanta Journal-Constitution notes, Kemp has a slim lead over Abrams. A Google search of the election results for the two shows Kemp at 50.5% and Abrams at 48.6%. The results were updated at 9:18am EST.