Hillary has no choice. She HAS to be at the debate on Monday. There is no plausible excuse they could give for Hillary not being there. The fact that they canceled her appearance in North Carolina is very significant. She had a comfortable lead there a few weeks ago, which has since disappeared. Despite this, she's a no-show. They will keep her under wraps until Monday to build her up as much as they can. If Hillary has to pull out of the debate, or if she suffers an obvious medical episode similar to her 9/11 collapse during the debate with millions watching, there's no way she can come back from that.
Yep. No show is a sure fire negative in the polls. She has a chance if she shows. She can claim illness and use that to justify her performance.
Or if she leaves the stage for 10+ minutes to “use the restroom”. Nobody will buy that now.