(L–R) North Dakota Gov. Doug Burgum, former New Jersey Gov. Chris Christie, former South Carolina Gov. and U.N. ambassador Nikki Haley, Florida Gov. Ron DeSantis, entrepreneur Vivek Ramaswamy, Sen. Tim Scott (R-S.C.), and former Vice President Mike Pence attend the second Republican presidential primary debate at the Ronald Reagan Presidential Library in Simi Valley, Calif., on Sept. 27, 2023. Frederic J. Brown/AFP via Getty Images