Georgia Secretary of State Brad Raffensperger is optimistic a Georgia winner will be projected on election night, CNN reports.

With more than 4 million early votes already cast and mail-in ballots received and accepted, all of them must be uploaded and recorded no later than one hour after polls close, Raffensperger said.

Most polls will close at 7pm, so by 8pm “you’ll have probably 99 per cent of all that, so you’ll get a good idea of what the race looks like,” he said.

“And then all the voting you’re seeing today, before the end of the night, you’ll have all that.”

Many of Georgia’s smaller counties are trying to finish by 10 or 10:30pm at the latest.

“But by the end of the night, you’ll have all those results,” Raffensperger said.