A political fellow at the London School of Economics has said Donald Trump's claims of voter fraud are "very dangerous."
President-elect Trump claimed the fraud in a series of tweets, in an attempt to suggest the media was still biased against him.
In the tweets he lambasted Hillary Clinton, his opponent in the US election, over her support for a recount of the vote in Wisconsin, reminding her she conceded the election on November 8.
Trump quoted her statements from the second debate, a response to his own statement that he might not accept the election results if they were not in her favour.
He also said: "In addition to winning the Electoral College in a landslide, I won the popular vote if you deduct the millions of people who voted illegally.
"Serious voter fraud in Virginia, New Hampshire and California - so why isn't the media reporting on this? Serious bias - big problem!"
Dr. Brian Klaas, a political fellow at the London School of Economics and the author of The Despot's Accomplice: How the West is Aiding & Abetting the Decline of Democracy, said this was dangerous because the claims are "completely unsubstantiated" and "denigrate faith and democracy."
He said Donald Trump needs to be focused on voter turnout, not the "mythical problem of voter fraud".
Listen to the full interview above.