Well, I know who Jane would pick...but in another case of Strange Bedfellows, Libertarian presidential candidate Bob Barr can't find much to argue with:

[What] George W. Bush has done to the fabric of our constitutional government, to Separation of Powers, to a government of limited powers, to destroy the notion that we are a nation of laws, not of men, is something that is absolutely unforgiveable, irresponsible and terribly, terribly destructive of our notion of government. President Clinton, certainly had my problems with him, but what he did in terms of perjury and obstruction was bad, but it was not destructive of the very systemic foundations of our country.

You can watch more of Jane and Barr's Bloggingheads segment here.