Trump's voter fraud claim 'based on evidence'
President Donald Trump believes that millions of people voted illegally in the US election based on "studies and evidence", the White House has said.
Press secretary Sean Spicer said Mr Trump "does believe that", but offered no evidence to support the claim when pressed by reporters.
Mr Trump has repeated his claim to explain why he lost the popular vote to Democrat Hillary Clinton.
But any notion of widespread voter fraud has been widely rejected.
"He continues to maintain that belief based on studies and evidence that people have presented to him," Mr Spicer told reporters on Tuesday.
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Mr Spicer's comments came after the president told congressional leaders behind closed doors on Monday night that three to five million undocumented immigrants had illegally voted in the election.
Mr Trump, who first made the claim in a late November tweet, has never provided any evidence.