I feel sorry for him. His greedy cohorts have propped him up for this race like Bernie and I don't think he's up to it. Alzheimer's would explain why he didn't know who the Tea Party was and why he's ducking reporters.
Not saying it is Alzheimer's but, if that's his problem, he can't debate, period.
Strom Thurmond had someone behind him who would pass him Cue Cards ,but he was 100 years old