A video from a rally in Arizona Sunday highlighted by The American Mirror seems to show Bill Clinton "deteriorating before our eyes."

During most of the difficult to watch 7-minute video, Clinton, 69, stands behind Mark Kelly and his wife, former Congresswoman Gabrielle Giffords, appearing utterly disconnected, staring expressionless, with his mouth dropped open and at times appearing to be "chewing on his tongue."

Even when the crowd responds to the speakers' statements, Clinton appears to hardly notice, staring dead-eyed and standing listlessly.

This is not the first evidence that Clinton's health has suffered as of late. As Rush Limbaugh and others have pointed out recently, Clinton has appeared to have aged markedly on the campaign trail. In early February, Limbaugh underscored how old the former president looked at a Hillary rally, calling his appearance "astounding."

"Bill Clinton standing behind Hillary last night, I saw that, too," said Limbaugh in response to a caller who noticed Clinton's "vacant old-man stare" at the rally. "I saw it all. I saw Prep H, I saw Geritol, I saw Fixodent, I saw Depends, I saw it all. I saw dripping saliva. I saw it all, folks. It was astounding. You didn’t see it? Well, it was striking."

The American Mirror points out that in 2013 Clinton admitted to having a progressive nervous system disorder after many had noticed he had developed a hand tremor, but the former president insisted that it was not Parkinson's.

"You may have noticed it; my hand has a little tremor when I’m tired and a lot of people do when they’re older," Clinton said at a Clinton Foundation event, describing it generally as a progressive nervous system disorder. "The first time it happened, I had to go get myself checked to make sure I didn’t have Parkinson's [disease]," he said.

Here's a video of Hillary's speech in Iowa in which Limbaugh and others had noted Bill's open-mouthed stare: