Democratic candidate Joe Biden said “we are going to win” in a speech and has urged people to have patience.
Mr Biden made an appearance and made a three minute statement to a crowd of supporters while votes are counted.
The remarks were made outside the Chase Centre in Delaware while votes are being counted across the country.
He said: “We feel good about where we are. …we believe we are on track to win this election.
“We knew this was going to go long.
“We feel good about where we are. We really do.
“We are feeling real good about Wisconsin and Michigan. It’s going to take time to count the votes, but we’re gonna win Pennsylvania.”
Ending his speech, he said: “Every time I left the house back in Scranton, my grandpa would say “Keep the faith, Joey.”
“Keep the faith guys, we’re gonna win this.”
Minutes later, current President Donald Trump tweeted he will also be making a statement shortly: “I will be making a statement tonight. A big WIN!”
Mr Trump’s tweet was flagged after he tweeted: “We are up BIG but they are trying to steal the election. We will never let them do it.
“Votes cannot be cast after the polls are closed.”
The tweet was deleted by Twitter as it “might be misleading about an election or other civic process.”
His statement comes as protests have erupted across the US with armed forces taking to the streets amid reports of scuffles and a possible smoke bomb.
As votes trickle in across the country as people eagerly wait for the presidential election result, there have been reports of unrest in Washington DC, New York and Los Angeles.
Images and videos posted on Twitter show crowds of demonstrators caught in what seems to be a brawl at Black Lives Matter Plaza in Washington DC.