Entrepreneur Vivek Ramaswamy (right) holds up a sign referring to former South Carolina Gov. Nikki Haley (left), as Florida Governor Ron DeSantis (center) looks on, during the fourth Republican presidential primary debate at the University of Alabama in Tuscaloosa, Ala., on Thursday. Jim Watson/AFP via Getty Images hide caption
At the second GOP debate on Wednesday, the candidates on stage may still channel former President Ronald Reagan — even if only in name, not policy. Mike Sargent/AFP via Getty Images hide caption
Oliver Anthony performs in Moyock, North Carolina, on Saturday. Virginian Pilot/TNS / Tribune News Service/Getty Images hide caption
Republican presidential candidates Sen. Marco Rubio, Donald Trump and Sen. Ted Cruz during a debate at the University of Houston on Thursday. David J. Phillip/AP hide caption
Republican presidential candidate, New Jersey Gov. Chris Christie points toward Republican presidential candidate, Sen. Marco Rubio at the other end of th stage as Republican presidential candidate, retired neurosurgeon Ben Carson looks on during a Republican presidential primary debate hosted by ABC News at the St. Anselm College on Saturday in Manchester, N.H. David Goldman/AP hide caption
New Jersey Gov. Chris Christie, Sen. Marco Rubio, R-Fla., former Florida Gov. Jeb Bush and Sen. Ted Cruz, R-Texas, talk after the Republican presidential primary debate on Thursday. Charlie Neibergall/AP hide caption
Republican presidential candidates arrive Thursday for the final Republican presidential debate before the Iowa caucus in Des Moines, Iowa. Jim Watson/AFP/Getty Images hide caption