http://lewrockwell.com/block/block187.html
#24.
I don't think that's the only place Walter mentions it, but that was the first I found. Walter never rated ALL the candidates though. Why any libertarian would seriously care about any candidate in the GOP primary that year other than Paul and Johnson I can't imagne.
How can you say Bachmann or Perry was better than Gary Johnson? Granted, I'm not thrilled with Johnson at all, I would have voted for him in 2012 but I'm not sure if I would anymore. I don't want anyone to confuse what Johnson supports with actual libertarianism. That said, he's a LOT closer than Bachmann, Perry, or Cain. I can't for the life of me understand why you'd put them at that level.
I'd probably go Paul >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (For the sake of brevity I'll end it here, I feel like I could add a hundred more) (I really doubt I need a REASON here) Gary Johnson >>>>>>>>> (Nobody who wants to cut 43% of the budget is all THAT bad, plus much less hawkish than the others, wants to legalize marijuana, admittedly bad on abortion) Bachmann (Above the others since she's read Mises) > Perry (Sucks on foreign policy but is actually passable on the economy, hates the FED, hates entitlements, and has flirted with secession as gov.) > Huntsman (Seems a little less hawkish than the others, and as I understand is actually fiscally conservative [By the standards of the neo-con GOP, in any case] just not rhetorically provocative) >Cain (I don't really like Federal Reserve people, and from what I remember he really wasn't that conservative > Romney (A flip flopping liberal, but maybe not as warlike as Gingrich or Santorum) > Santorum (Its really hard to decide between Gingrich or Santorum for "Worst", I'm picking Santorum as slightly above Gingrich because, bad as Santorum is, at least he said he'd vote for RP over Obama, Gingrich did not) > Newt Gingrich (Wants to start freaking WWIII, crazy neo-con nuthead.)