For the conspiracy buffs

Hillary Clinton does not have Parkinson's disease. She's entirely too agile and lucid.
She actually speaks in sentences with subordinate clauses...
And none of the motions claimed to be Parkinsonian are actually valid. She shows none of the well documented symptoms of PD tremors.   As a matter of fact, the hand motion that has been used as an example would probably be impossible with Parkinson's.  The fingers want to curl.
I challenge anyone to maintain her travel schedule for a year without tripping, or being startled, or getting exhausted (or Walking Pneumonia),  

Trump flies in his own plane home to sleep in his own bed every night.   (And charges it to his campaign...)
 
I do think it's possible that Bill has Parkinson's.  He's looking and acting very much like my father did when he started taking L-dopa.
Emaciated. Paralyzed around the eyes. Halting motor movement and speaking. Moments of disproportionate elation.

That scenario is not nearly as exploitable though...