South Carolina GOP Primary: Who's left to battle Romney

Come Saturday, South Carolina’s voters will choose their state’s preferred Republican presidential candidate. The primary is open so any of the state’s voters can participate with delegates awarded on a proportional basis.
Right now Mitt Romney is ahead in the polls with about 40% support with Newt Gingrich, Ron Paul and Rick Santorum following. Perry has less than 6% and Jon Huntsman, who had 5.6%, just bailed out this morning while endorsing Romney. (I doubt that this will give Romney a 5.6 point bounce in the polls though.)
