If surveys are to be believed, there are at least two male and one female libertarians in the world.
Since the voter registration thing only had so many options, I've been a registered Libertarian for about 10-13 years. My beliefs are more akin to a Green/GeoLibertarian combination, but I recognize my beliefs are merely that: beliefs. Preferences. I know they are not terribly practical or implementable.
For this reason, I tend to support (in the real world) Dems more than Repubs, but I have certainly voted a near rainbow ballot before (no proclaimed communists/socialists/whatever to support). I tend to care more about people than property, more about personal freedom and protection than business/moneyed interests. Of the two, Dems are closer to my preferences than Repubs at this point.