It was pretty obvious from the Senate/Comey telecast a few weeks ago that something was seriously wrong with his health, even though he might not have understood it himself. 

Teddy Kennedy had the same thing, IIRC.

2 hours ago, Jingthing said:

It looks very bad for McCain and it probably is but you never know. Look at Jimmy Carter.

Yes, Jimmy was in town here last week. He had a dehydration problem after sawing boards for an hour at a home building project. Sawing boards for an hour? At his age? Anyway he spent the night in the hospital then went straight back to the Habitat Project next morning. Great man.