Among gamers, I'd say it's liberal then libertarian, with the libertarians being more outspoken. That's probably due to demographics.
And while there are logical systems of belief possible for the major ideologies, in practice many peoples' political beliefs are far from being logical. It's frequently an inconsistent and impractical hodgepodge of emotion, ill-considered kneejerk reactions defended to the death, and what-my-parents-think. Liberals are hardly exempt from that. The R and D platforms are a reflection of trying to predict and exploit the random stampeding of the uncritical herds, and thus make even less sense. Now add a third level, people who follow the party line without going so far as developing their own beliefs no matter how emotional or nonsensical their personal process would otherwise be.
...and that is why our last few presidential candidates were GWB, John Kerry, Al Gore, Obama, Bob Dole, Bill Clinton, and John McCain.
[This message has been edited by Ulrich (edited 9/18/2012 11:44a).]