GOP Presidential Candidate Newt Gingrich Campaigns In North Carolina

CONCORD, NC - APRIL 24: Republican presidential candidate, former Speaker of the House Newt Gingrich and his wife, Callista Gingrich, take a photo with Raphe Ploski (C), after holding a primary night gathering at the Vintage Motor Club on April 24, 2012 in Concord, North Carolina. Gingrich has vowed to stay in the race until Mitt Romney, the presumptive nominee, reaches the 1,144 delegates needed to secure the nomination. (Photo by John W. Adkisson/Getty Images)