Donald Trump’s age comes into focus as Kamala Harris labels him ‘unfit’ and ‘exhausted’ [Video]

DONALD TRUMP’S ENERGY levels emerged as a flashpoint in the presidential race as the Republican nominee and Democrat Kamala Harris scrambled across battleground Michigan with election day looming.

Harris told reporters that Trump was “unfit”, “unstable” and “a danger to our democracy” ahead of an afternoon rally.

But she appeared to touch a nerve with her Republican rival when she mentioned a report that Trump was “exhausted”.

“Being president of the United States is probably one of the hardest jobs in the world and we really do need to ask, if he’s exhausted on the campaign trail, is he fit to do the job?” said Ms Harris, who has been on the road campaigning since Monday and will not return to Washington until some time next week.

Her attack comes as she seeks to raise doubts about Trump’s health over the final days of the campaign.

Trump, at 78, would …