The Prime Minister at the same time wished his rival Hillary Clinton luck as the final day of election campaigning got under way, sticking to the government’s position of not expressing a preference in foreign elections.
But the comments, from a Number 10 spokesman, were seized on by Liberal Democrat leader Tim Farron, who referenced the numerous allegations of sexual assault that have engulfed the Republican candidate’s campaign.
Mr Farron said: “Donald Trump is not just mad and bad but he’s also dangerous. Why would you wish him luck?
“I have never seen anyone so unworthy of the office of the presidency in history.
“He is a nasty misogynist and woefully under prepared for the immense responsibility that comes with sitting in the Oval Office.
“I am worried that millions of people will vote for him this week. The party of Abraham Lincoln is now the party of Donald Trump.”
Mr Farron spoke after a Downing Street spokesman was asked if the PM had a message for the two candidates, replying: “I think the Prime Minister would wish them both good luck”, insisteing the government would not express a preference.