U.S. Republican presidential candidate Gingrich addresses supporters with his wife, Callista, during a rally in Concord, North Carolina

 
U.S. Republican presidential candidate Gingrich addresses supporters with his wife, Callista, during a rally in Concord, North Carolina
U.S. Republican presidential candidate Newt Gingrich addresses supporters with his wife, Callista, during a rally in Concord, North Carolina April 24, 2012. The primaries on Tuesday could spell the end for another remaining rival, former House of Representatives Speaker Newt Gingrich. He said on Monday he would reassess his candidacy if he did not win the primary in Delaware, where he had campaigned heavily in recent weeks. REUTERS/Chris Keane (UNITED STATES - Tags: POLITICS)