I voted for Option 2. Libertarianism is a particularly American form of conservatism, most en vogue among the nouveau-riche, those who have money but not power. It has superficial similarities to liberalism, particularly of the Danish variety, but this is an example of convergent evolution.
Seriously? 
Yes, seriously. Mainstream libertarianism is an outgrowth of the right, taken to its logical extreme.
Well, mainstream libertarianism is a bastardization advanced by the right. it is not to be confused with actual libertarianism.
Poll
