Since the 3 possible Republican candidates are all running on platforms made up of slightly varied amounts of limiting civil liberties, war, torture, and pigfuckery they're all out of consideration for this endorsement. The one Republican I agree with on several issues is likely a racist nutbag and so he's out also.

On the Democrat side of things, the candidate I most agree with (according to several online tests) has already dropped out and was not going to get many votes anyway. So that leaves Hillary Rodham Clinton and Barack Obama and between the two I definitely choose Obama.
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And Senator John McCain of Arizona, once considered a prohibitive favorite, is now operating on a relative shoestring. He raised $5.7 million and spent $5.5 million, leaving him with $1.67 million that could be used in the primaries, and $1.73 million in debts.

By comparison, Representative Ron Paul of Texas, whose libertarian, antiwar Republican candidacy has gained a passionate following on the Web, raised $5.2 million and had $5.4 million left for the primaries and no debt.