Despite these projections, Mr Trump’s campaign has said he does not have any plan to concede.
In a statement given moments after TV networks declared Mr Biden the winner, Mr Trump vowed he “will not rest: until there was an “honest vote count”.
The statement read: “We all know why Joe Biden is rushing to falsely pose as the winner, and why his media allies are trying so hard to help him.
“They don’t want the truth to be exposed. The simple fact is this election is far from over.
“Legal votes decide who is president, not the news media.”
In a letter on Sunday, a nonpartisan advisory board the Center for Presidential Transition said: “We urge the Trump administration to immediately begin the post-election transition process and the Biden team to take full advantage of the resources available under the presidential transition act.
“This was a hard-fought campaign, but history is replete with examples of presidents who emerged from such campaigns to graciously assist their successors.”