Gingrich says he can 'shake up' nation's capital

FILE - In this Nov. 29, 2011 file photo, Republican presidential candidate and former House Speaker Newt Gingrich speaks during a town hall rally in Bluffton, S.C. Gingrich was in town to open the Newt 2012 Beaufort County field office in downtown Bluffton. South Carolina's Republican presidential primary mirrors the national contest, with Newt Gingrich enjoying something of a boom as the GOP continues its potentially fruitless search for an alternative to perceived front-runner Mitt Romney. (AP Photo/Stephen Morton, File)

January 23, 2012 9:27:04 AM PST
Fresh off a big win in South Carolina, Republican Newt Gingrich found himself on defense Monday as the volatile GOP presidential contest shifted to Florida.