Polls Suggest Two-Man Race as South Carolina Voters Prep for Saturday's Primary

A day before the South Carolina primary, a drumbeat of polls suggested a "neck-in-neck" race between Mitt Romney and Newt Gingrich. Ray Suarez discusses the closing moments of the "single craziest week of the 2012 campaign" with Gwen Ifill, who has been reporting the building action from Columbia, the state capital.