I agree...mental illness-psychotic episode etc.. treated in the past would sway voters of all kinds. I think few would take a chance on him knowing something like that had occured...not in these dangerous days anyway. People will put a liar aka Clinton or a treacherous liberal in office but I think people would think twice before doing so for a factually proven unstable candidate with a history of serious mental disfunction.
Possible mental health connection?
See:
http://www.tryontheglasses.com/blog/_archives/2004/10/23/165648.html
Interesting article from a 2002 wapo article
msl