Scenes From South Carolina's Campaign Trail

VOTE 2012 -- January 20, 2012 at 5:11 PM EDT

Scenes From South Carolina's Campaign Trail

Former Speaker of the House Newt Gingrich speaks during a campaign stop on Jan. 19, 2012 in Walterboro, S.C. (Photo by Joe Raedle/Getty Images)

The PBS NewsHour's politics team is on the ground in South Carolina covering the busy days before Saturday's primary. Gwen Ifill points out five things to watch for after "the single craziest week of the 2012 campaign." Here's a look back at that week in video and tweets:

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