Democratic presidential candidate Kamala Harris raised concerns Friday about Donald Trump’s physical stamina to serve as president during a heated campaign in the crucial state of Michigan.

Trump, 78, is the oldest candidate after Joe Biden, 81, to run for president.

According to ReutersHarris, who turned 60 on Sunday, said Trump skips interviews because of fatigue.

Harris joined the race in July after Biden ended his re-election effort following a poor debate performance against Trump in June.

She said: “That should be a matter of concern. If he can’t handle the rigors of campaigning, is he fit to do the job? That’s a legitimate question.”

Trump later denied all these allegations and said: “It’s now been 48 days without rest, I’m not even tired. I am truly elated. Do you know why? We are killing her in the polls, because the American people don’t want her. »

A recent poll found a close fight between the two candidates, with Harris holding a marginal 3 percentage point lead over Trump.