I have many disagreements with him, but he is the best candidate in the current election by a mile. I don't think I will be a US citizen anymore by the time (assuming the US finally lets me renounce) the election rolls around, but if I were I would probably throw my vote his way.

There's no chance he would win, even though he is far to my right he is far too left for the establishment to tolerate. If nothing else, I hope he represents a "gateway" to people getting more interested in actual left thought. People realizing there is a choice outside the two colors of the same party. I know a few comrades who started as liberal Bernie supporters, and then sprinted left from there. They would never support somebody as rightwing as Sanders now, but he was at least the first step for them.

I ultimately don't think the US can vote itself into an actual socialist government anyway, that would take an actual revolution.