Clinton Hits Back at Trump's Questions About Her Stamina

Hillary Clinton tells ABC's David Muir that she is "now in full campaign mode"

[EXCLUSIVE]

"No. Not at all," Clinton said when asked if she were being out-campaigned by her Republican rival.

Trump made roughly 20 stops in August and said recently that the former secretary of state doesn't look presidential or have the drive or stamina to do the job -- a remark Kaine called "idiotic."

"I got added to this ticket about 11, 12 weeks, 100 days from the election. This great public servant has been on the field for 17 or 18 months it’s hard to keep up with her," said the Virginia Senator. "The day he tweeted out 'Hillary didn’t come to Mexico, does she have the energy.' She was here in Ohio talking to the American legion."

"What we have released is commensurate with what others who have been nominated for president have release. And we followed closely what the format was, we put out the information. We now have the doctor who signed his letter basically saying he did it in five minutes, because the 'limousine was waiting.' It is devoid of information," said Clinton, referring to recent comments from Trump's doctor, Harold Bornstein.

In an interview with NBC News, Bornstein claims he wrote Donald Trump's medical letter in 5 minutes while a limo sent by Trump waited outside his Manhattan office.

On Monday at the Cleveland Hopkins International Airport, Clinton's plane parked next to Trump's as both candidates campaigned in the battleground state of Ohio. "Just shows you how important Ohio is. We're gonna be here a lot," Kaine told reporters.