I find that idea hard to believe, although they sure seem to hate his guts. However, after the riot shutting down his Chicago rally, we will have to see how things develop. Things have a way of getting out of hand when you think of the mob.
That said, so I think that many in the establishment would be sorry if this came to pass? No.
The question is, during an election where the establishment is held in contempt by many of the voters, how would the country react?