Rick's not a guy you'd get buyer's remorse with, unless you don't read his policies. Unlike Gingrich, Cain and Perry he seems to be a genuine guy. I suspect however that Rasmussen skewed this poll to create some Santorum momentum, which I don't really mind considering all the tricks Romney gets up to.
He's genuine - genuinely batsh** insane. You get buyer's remorse when you look deeper than "he's the leading socially conservative candidate" and see the detail. He's just the current toolshed on the socon pedestal.