The Republican debate was held on Wednesday, September 27, 2023, from 9 to 11 p.m. Eastern Time. It was hosted by Fox Business Network and took place at the Ronald Reagan Presidential Library in Simi Valley, California. The debate was moderated by Fox Business Network host Stuart Varney and Fox News Channel host Dana Perino, as well as Univision anchor Ilia Calderón. Seven candidates qualified for the debate: Gov. Doug Burgum of North Dakota, Former Gov. Chris Christie of New Jersey, Gov. Ron DeSantis of Florida, Nikki Haley, the former governor of South Carolina and former ambassador to the United Nations, entrepreneur Vivek Ramaswamy, former Vice President Mike Pence, and South Carolina Sen. Tim Scott. The debate was broadcasted on Fox News Channel and Fox Business, as well as on the network’s website and other streaming and digital platforms. There was also a Spanish-language feed airing on Univision.