Would they disperse though? Leaving jeb with enough moderate votes? That’s what frightens me.
I do have inclinations.
I think those who would support Jeb already are on record as having done so.
Same with all the others, for whatever reason, real or perceived, they have their guy (or gal).
So, would they (and we) not consider the candidate's views and plans, as well as their personal charisma, their personality, as a drawing force?
Then, look out there and see who matches closely with whom, and notice that Jeb really does not match up with Trump closely at all.
I would place hard cash on Most of trump's supporters gravitating onto someone other than Jeb at this point in time.