Trump has declared a victory in the exit polls, although he hasn’t provided a final count.
Exit polls show Trump ahead by 4.6 million votes, or one-third of the total.
Trump, however, has refused to release the final results, saying he will do so “later”.
Trump’s spokesman did not respond to a request for comment.
Trump’s campaign manager, Corey Lewandowski, said the campaign had not released final results of the exit poll but said he expects the number to be lower than the actual count.
Trump was declared the winner on Friday, when he won all three states of New York, Pennsylvania and Michigan.
But the final tally was far from certain, with some exit polls showing a wider gap than the official count, and a pollster also found a discrepancy.
The exit polls were carried out by Edison International, a company that has been widely criticised by Trump and others for its flawed methods.
The final results were not released until Friday afternoon.
The US exit polls are the most comprehensive national data on how the electorate votes.
Some of the most prominent examples of this were conducted by Edison in 2000 and 2004.
In those elections, Republican George W Bush won Florida by a slim margin, while Democratic Barack Obama won Ohio by almost 10,000 votes.
In the 2016 election, however the exit-polls showed Trump winning the popular vote by almost 3 million votes.
Trump and his allies had insisted that they had been counting the vote in the states that had voted.
Trump supporters had claimed that the exit surveys were flawed and had manipulated the vote count.
But Trump’s aides have also repeatedly claimed that they were not responsible for the discrepancies in the final count, claiming that they merely adjusted the vote tallies for the jurisdictions that had participated in the election.
Exit pollsters are widely regarded as unreliable pollsters, but Trump’s claim of widespread vote manipulation is also disputed by exit-count experts.
“It is hard to say how much of this manipulation is attributable to the exit polling or how much is due to the methodology of the pollsters,” said Steve Greenberg, a professor of politics and political science at Emory University in Atlanta.
Trump said on Friday that his team was looking into the discrepancy, and he suggested that there was more to the discrepancy than Edison’s exit polls.
“I’m not going to get into the Edison numbers,” he told reporters in the White House Rose Garden.
“But it’s a very small percentage of what they have, and they don’t know how to do it.
I’ve seen them do it before, I’ve never seen them.
And I think it’s possible they could do it again.”