Newt Gingrich, former U.S. Speaker of the House, left, listens as Rick Santorum, former U.S. Senator, speaks during a presidential debate sponsored by Bloomberg via Getty Images and The Washington Post held at Dartmouth College in Hanover, New Hampshire, U.S., on Tuesday, Oct. 11, 2011. The event moderated by U.S. television talk show host Charlie Rose and featuring eight Republican candidates, presents the first debate of the 2012 political season focused solely on the economy. Photographer: Scott Eells/Bloomberg via Getty Images