Republican presidential candidate Santorum leaves his South Carolina primary night rally in Charleston

 
Republican presidential candidate Santorum leaves his South Carolina primary night rally in Charleston
Republican presidential candidate and former U.S. Senator Rick Santorum leaves his South Carolina primary night rally in Charleston, South Carolina, as former vice presidential candidate Sarah Palin speaks on a television monitor in the background, January 21, 2012. REUTERS/Chris Keane (UNITED STATES - Tags: POLITICS ELECTIONS POLITICS)