Sanders is probably the only candidate with some sane policies (tbf, the little I've heard from O'Malley wasn't all bad either) even if he's weak on foreign policies. Hillary you can just tell that there's nothing even remotely principled about what she's saying.
The GOP is not even a political party at this stage. It's so far off the charts even the 'main stream' establishment wing basically consists of lunatics like Cruz. Trump is clown and what he's saying is beyond idiotic but I would take anyone, including Trump himself over corporate puppet Hillary. It would be a new low electing someone who is a war criminal even before becoming president.
Tbh Trump checks all boxes on the psychopath inventory test, which is scary. If you want the expert in the field, check the articles of Robert Hare.
http://www.hare.org
http://www.ncbi.nlm.nih.gov/pubmed/23834781
https://en.m.wikipedia.org/wiki/Psychopathy_Checklist
Trump is the fire to the fuse that is the world right now....
Damned, i use the guy as a textbook case in my classes. Scary tbh.