Beyer160
Vagabond Of The Western World
Except they are, with a few exceptions.
Dunno about "few"- there was nowhere near this kind of revolt when Obama took the nomination from Clinton, or any other primary I can recall. This time there's a pretty clear philosophical difference between the candidates instead of simply a brand preference between two candidates with basically the same agenda. The split is between moderate/centrists and progressives, and when the centrist candidate very actively represents everything the progressives are mad about, party unity is going to be kind of a tall order.