I am not a registered member of any political party. As a matter of fact, I find the whole notion of party politics, and even voting itself, a little distasteful. The idea that if enough of us raise our hands, we can take all the money away from that guy over there is a little repulsive to anyone of good moral character.
To the extent that I do participate in the political process, it's in a combination of protest and self-defense; at least I voted back at the people who want to run my life. I mean, they're going to vote at me no matter what, so I may as well use the provided form to register my disapproval, if nothing else.
Anyhow, there's a certain class of people who will read the paragraphs above and, like a knee tapped with a mallet, launch into a "Well, when you Libertarians can elect a dog catcher, then we'll take you seriously, until then..."
This always sounds to my ears as "Well, our guys may be despicable turd-burglars, but at least they win elections!" and therefore makes absolutely no sense to me.