As last night's debate makes clear, Ron Paul and his fans stand out a bit from the general Republican pack. Which explains why the web site "Primarily Paul" has created this chart explaining to Paulistas the states in which they need to register with the GOP in order to vote for their man in the primaries, and the deadlines to do so. In my home state of California, for example, you do need to be a registered Republican, and the deadline for registration would be Jan. 21.
One may also, Paul admirer or Paul hater, come primary day or election day fall back on your sacred American right to not vote at all. Or see here former principled non-voter Bretigne Shaffer explaining why Ron Paul has made her change her mind.