REFILE - ADDING "FORMER" TO TITLE OF GEORGE PATAKI - Republican U.S. presidential candidates (L-R) former New York Governor George Pataki, former U.S. Senator Rick Santorum, Louisiana Governor Bobby Jindal and U.S. Senator Lindsey Graham gather onstage for a debate between the lowest polling candidates held before the second official Republican presidential candidates debate of the 2016 U.S. presidential campaign at the Ronald Reagan Presidential Library in Simi Valley, California, United States, September 16, 2015. REUTERS/Lucy Nicholson