Fox News projects that Newt Gingrich will win the South Carolina primary, with Mitt Romney second and Rick Santorum and Ron Paul fighting it out for third. This suggests a result with Gingrich leading Romney by at least the 5% margin he had over him in the realclearpolitics.com average of recent polls, and probably more, since the networks would be unwilling to project a winner so quickly if the exit poll indicated a closer result.