Thanks to Dinochick for the Glassbooth quiz.
The first time, I came out 80% similar to Ron Paul, a Republican running as a libertarian, 72% similar to Mike Gravel, a Democrat running as a libertarian, and 64% similar to Barack Obama. I had limited my choices of issues to just a few, so then I took the quiz again.
The second time, I came out 76% similar to Mike Gravel, 71% similar to Barack Obama, and 70% similar to Ron Paul. That change came largely as a result of adding my anti-gun-control stance.
The third time, I added only gun control issues to the four I had chosen the first time, and in the results, they left that issue out entirely. Consequently, I have to conclude that the quiz is biased, because it came out identical to the first time.
Also, the way they define some of the issues is different from a simple "strongly oppose" or "strongly agree" response on the quiz - for example, when I said I was for "free trade," somehow that equated to being for NAFTA, which isn't really free trade, it's strongly regulated trade, legislated trade.
But, hey, that's as far as I'm getting into this sort of s***! Interesting quiz, though - after reading it, I'll probably have to vote either libertarian or Republican. Well, that's months away, plenty of time to decide...