The video of Clinton in a state of near-collapse on Sunday was “terrible,” Democratic strategist Hank Sheinkopf acknowledged.

“The idea of her appearing to be out of physical control reinforces Trump’s argument about her capacity and it reinforces the question of whether she is hiding something,” Sheinkopf added.

Tobe Berkovitz, a Boston University professor who specializes in political communications, said that on a 1 to 10 scale, with 10 being the most damaging, the video footage rated “a 15.”

Berkovitz added: “No matter what you say and no matter how you say it, everyone sees the presidential nominee basically collapsing, almost on the street. When you are saying, ‘I want to be commander in chief and I have the toughness and the strength to lead America during trying times,’ well, you don’t want to see that person being carried into a van.”

One silver lining to the health cloud may be the extent to which it has sidelined the controversy over the “basket of deplorables” comment.