I voted for Paul in the Virginia Primary for the republican candidate for the 2008 election. Some may call that a "wasted vote" but things were pretty much decided by the time the primary process got to Virginia so as long as ANY vote not for McCain was going to be a "protest vote", I decided to make it an unmistakable vote for liberty.
This time around I'm for Gary Johnson. He comes off to me like a candidate who argues more from a practical viewpoint rather than an ideological viewpoint. I'd imagine he favors drug legalization across the board but he is just pushing in this campaign for what he believes is achievable(ie. just legalizing marijuana). With moves like this he just seems more pragmatic(and therefore potentially electable) than Ron Paul.
Also Paul keeps getting re-elected from one congressional district in Texas, which from his stands on many issues, I can only believe must be a very libertarian/conservative district. Gary Johnson is a heavy duty fiscal conservative who got not only elected, but then four years later, RE-ELECTED Governor in a blue state like New Mexico.
It's all well and good to speak about how Ron Paul will raise important issues in the debate but with runaway deficits from overspending and ravaging of civil liberties from the Patriot Act, things are going down the crapper in this country NOW. I don't know if either of them has a chance in hell of a)getting the republican nomination or b) beating Obama in 2012 if they get it, but I do believe Gary Johnson has a much better chance of doing both than Ron Paul.