Republican candidates for US President line up for a photo at Dartmouth College in Hanover, New Hampshire

From left, republican candidate for US President and former Massachusetts Governor Mitt Romney, debate moderator Charlie Rose, presidential candidate Texas Representative Ron Paul, and candidate former house speaker Newt Gingrich, line up for a photo-op before the start of the Bloomberg/Washington Post Republican debate inside the Spaulding Auditorium at Dartmouth College in Hanover New Hampshire on October 11, 2011. UPI/Matthew Healey