Biden has taken the lead in Georgia with 99% of votes counted, the BBC's results system shows.



If Biden takes Georgia, Trump cannot achieve the required 270 Electoral College votes to secure the presidency.



Biden has a slender lead in Nevada and Arizona and is chipping away at Trump's advantage in Pennsylvania.



President Donald Trump has again asserted he has won the election, though votes are still being counted

Trump complains of “tremendous corruption and fraud in the mail-in ballots", without giving evidence.



Joe Biden says people should remain calm as votes are counted, adding he has "no doubt" he will emerge the winner.

Biden takes the lead in Georgia

The Georgia secretary of state reported late on Thursday there were about 14,000 ballots still to count in the state.

The state also will have to sift through votes from military personnel and overseas residents as well as provisional ballots cast on Election Day by voters who had problems with their registration or identification.

Biden has been steadily chipping away at the Republican incumbent’s lead in Pennsylvania as well. His deficit had shrunk to just more than 18,000 there by early on Friday, and was expected to continue falling with many of the ballots still to be counted being cast in Democratic areas.

Biden also maintained slim advantages in Arizona and Nevada. In Arizona, his lead narrowed to about 47,000 early on Friday and in Nevada he was ahead by about 11,500 votes.

As the country held its breath for a result in the White House race, Georgia and Pennsylvania officials expressed optimism they would finish counting on Friday, while Arizona and Nevada were still expected to take days to complete their vote totals.