What I think they are is a bunch of young, naive, emotion-driven leftish tech types who thought this sort of organization could put into practice their naive and ill-thought-out ideals. (A similar naive idealism explains why those who embrace libertarianism tend to be tech types.)
The question is: will they simply drop out of politics after their first foray into real campaigns, or will they take their loss to heart and either a) grow up, or b) go even wackier left?
I'm thinking that most of them drop out in disgust. Some few will grow up, and there will be a hard core of activists who will head left.