@Miller,
Some of the promises of Sanders could be fulfilled or at least partially or in another form; I honestly think by Hillary. He doesn't rely on congress to fulfill his campaign promises, he believes a revolution will make those in congress do the will of the revolutionaries or else be voted out. From what I gather on reading about his history, it is his lifelong dream. I don't think he is a con man, I think he is sincere and believes every word he has been saying. I still think in his in own way he would be as dangerous as Trump precisely because he is so sincere and in my opinion, driven and extreme.
I don't believe he has said whether he believes in God one way or another. Just because he divorced his first wife to marry a Catholic does not mean he doesn't believe in God, even he doesn't, it really doesn't matter as long as keeps the separation between church and state.