(CNN) - With Tuesday's vote too close to call, the Atlanta mayoral race may be headed for a recount.
The latest count shows former state senator Kasim Reed leading City Councilwoman Mary Norwood by 620 votes, out of more than 84,000 cast. Reed claimed victory early Wednesday morning, but Norwood, who is trying to become the city's first white mayor in 35 years, said she will not concede and is open to a recount.
Provisional ballots are expected to be counted Thursday and the election could be certified at Noon on Saturday. Since the margin of victory will most likely be less than one percent of the total vote, the runner up is allowed to petition for a recount.
On November 3, Norwood won 46 percent of the vote, 4 points short of the 50 percent needed to secure victory outright. Failing to reach that threshold level, Norwood faced the runoff with Reed, who won 36 percent of the vote on November 3.