IANAL-I am not a libertarian.
I find doctrinaire libertarianism a bit whacky, but if I was a dedicated Libertarian, I would vote third party. If you really hold those beliefs, it's not a matter of picking the lesser of evils.
Same thing with a communist, no I am not comparing the two. But if you genuinely believe in communism, voting for democratic style socialism would be repulsive as well. I disagree with the philosophies, but I do get a bit annoyed when folks here try to suggest that Libertarians go and vote for Chris Shays or Lincoln Chafee and they are horrible human beings if they don't.
I would just like to vote for the party that is for maintaining the security of our borders, our property, and our nation, providing a criminal justice system, and otherwise reigning in the rampant Federal agencies and the rampant budget that supports them.
Once upon a time, Republicans were that party, but most of them don't even bother to talk the talk any more, let alone walk the walk.
I will probably hold my nose and vote mostly for Republicans today...but if there was a viable Libertarian on the ticket, I'd be all for it.
Thanks a lot, GOP. [sigh]