I would like to see either Bernie Sanders, or Larry Lessig, elected.
Bernie Sanders seems to me to be the most progressive, and reasonable, candidate available - his policies, many of which he seems to have held since, like, forever now, are quite sensible and, looking at some of his interviews, he is pretty straight forward about what they are, and how he would put them in place.
On the other hand, Larry Lessig, if elected, plans to deal exclusively with campaign finance and election reform, after which he would resign; the reasoning behind it being that, until corruption in politics is addressed, it will always distort important issues, and prevent them from being dealt with in a manner that reflects the public interest.