Blogonomicon led me to a well-reasoned essay about being a "single-issue voter."
I've denied being single-issue many times, citing my demands for fiscal responsibility and such. Of course, when it comes down to it, I prefer to vote for the guy who respects me enough not to disarm me, preferably one who respects me enough to fight the current restrictions. There aren't enough of that sort these days. Anyway, read the essay. It's worth your time.