Publius Endures (a libertarian? blog) comes close to endorsing Barack Obama. Why? Because Obama is anti-defense (hmm... I thought defense was one of the few legitimate functions of the state), somewhat "fiscally responsible" (in that he would cut the defense budget), pro-freedom (if you think that the "War on Drugs" is as important as, say, a massive regulatory burden that harms businesses and therefore consumers), and "good" on education (in that he favors a different kind of ill-advised federal involvement than NCLB).
Needless to say, I find a lack of perspective and balance in the mish-mash offered by the proprietor of Publius Endures. For antidotes, read this and this.