Gallup June 2015:

"WASHINGTON, D.C. -- As the 2016 presidential election field takes shape, more than nine in 10 Americans say they would vote for a qualified presidential candidate who is Catholic, a woman, black, Hispanic or Jewish. Less than half of Americans would vote for a candidate who is a socialist."

Where does that put a Jewish Socialist candidate?

If you throw in the fact that 60% of the Jewish electorate is Democratic and 29% of the Jewish electorate are Republicans, Bernie's chances are even more interesting depending on who the final Republican candidate is.