I'd prefer a republican candidate in 2012 for my vote.
there will always be a libertarian candidate, and he/she will get my vote if Palin is the candidate. 
You know why?  She's a RINO dude.  She supported amnesty, TARP, capping emissions, marijuana, "sometimes" anti-abortion, sanctuary cities, hispandering for votes and admitting it, etc.
She's more liberal than you think, dude.  Just like mccain was.
If it's liberal against liberal-who-loves-guns (Obama vs Palin), I'll vote libertarian.  Every other repub candidate out there might get my vote.  but not her.  She's an overconfident puppet.