But libertarianism? Sure, there are some famous skeptics who are libertarians, like Michael Shermer, Penn Jillette and Robert Sheaffer. But it seems rather rare among "grassroots". Michael Shermer's libertarian posts on Skepticblog recieved mostly negative responses, and it seems to me that many (liberal) skeptics dislike libertarians even more than they dislike conservatives.
But I may be mistaken. How prevalent do you think libertarianism is among skeptics? Judging by Loxton's comparison, the majority (or at least about half) of skeptics would be libertarians.