FF, though he shouldn't run for President because even if he did run in the Democratic primary and won, we're practically giving Republicans the Presidency since he will be too polarizing to appeal to a lot of moderate voters. He would get some libertarian support, but nonetheless they would still vote for the Republican and carrying the left-wing vote just wouldn't be enough. Hillary, at least, has crossover support from Democrats and Republicans alike. His non-interventionist foreign policy and strong socialist economic principles I could get behind, but he's too socially liberal for my liking to vote for him over Hillary.
In 2000, Hillary ended up polling 5 points behind Gore in NY. In 2012, Sanders polled 11 points ahead of Obama in Vermont. So basically, Sanders is capable of winning Republicans, while Hillary is capable of losing Democrats.
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