Joe Biden is still ahead in the battleground state of Georgia, but there is still a possibility the outcome could change, Georgia's voting system implementation manager Gabriel Sterling said in a news conference on Friday, reports Sputnik news agency.

"Yes, Biden's ahead by 1,585 votes, but that could change in the next few days... he could extend his lead, it could either stay the same, or President [Donald] Trump could come back in the lead," Sterling said. "There is still time and universal ballots that could allow for that."

Sterling said Georgia will not be able to ascertain a final outcome until after the anticipated recount.  

Georgia carries 16 electoral votes and is considered one of swing states of the season despite its consistent record of voting for the Republicans.

The Democrats hopes for flipping Georgia for the first time since 1992 are bolstered by recent years of tightening elections.

In 2016 Trump defeated Hillary Clinton by 211,000 votes, five percentage points, a narrowest margin in last five campaigns. It was followed by a neck-in-neck gubernatorial race of 2018.

Trump relies on non-college white voters and men, while Biden performs with women and black constituencies.    

Meanwhile, Trump has warned Biden that he should not declare hmself a winner.

"Joe Biden should not wrongfully claim the office of the President. I could make that claim also. Legal proceedings are just now beginning!" Trump tweeted.

Questioning the counting process and warning to take legal stance, Trump said: "I had such a big lead in all of these states late into election night, only to see the leads miraculously disappear as the days went by. Perhaps these leads will return as our legal proceedings move forward!"