Callista Gingrich lwathces on as her husband, Republican presidential candidate, former House Speaker Newt Gingrich speaks during a campaign stop at Food City on Monday, March 5, 2012 in Knoxville, ... more 
Callista Gingrich lwathces on as her husband, Republican presidential candidate, former House Speaker Newt Gingrich speaks during a campaign stop at Food City on Monday, March 5, 2012 in Knoxville, Tenn. (AP Photo/Evan Vucci) less 
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Associated Press | Photo By Evan Vucci
Tue, Mar 6, 2012 3:49 AM EST