Michael Shermer gave in the latest Scientific American a link to Yourmorals.org, a site with heaps of questionnaires intended to explore one's standing on morals.
This particular questionnaire builds on the idea that one can use five factors to explain people's political leanings. Apparently I don't quite match the typical (presumably US) “liberal”, which shouldn't be too surprising. Strange though, that my values decrease by exactly unity for each factor. I suspect the values may suffer from considerable quantization effects.
Another item of interest is that about six times as many “liberals” as “conservatives” have filled in the questionnaire, it suggests some major skewing in who finds out about surveys like this and/or who finds them interesting.