Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign event at the Hilton Hotel in Arlington

 
Republican presidential candidate and former Speaker of the House Newt Gingrich speaks during a campaign event at the Hilton Hotel in Arlington
Republican presidential candidate and former Speaker of the House Newt Gingrich speaks next to his wife Callista Gingrich during a campaign event at the Hilton Hotel in Arlington, Virginia May 2, 2012. Newt Gingrich is quitting the U.S. Republican presidential contest after a tumultuous campaign marked by flashes of brilliance in debates, staff desertions and offbeat ideas. REUTERS/Benjamin Myers (UNITED STATES - Tags: POLITICS ELECTIONS)