The Republican presidential debate is on tonight, Wednesday, September 27, 2023, from 9 to 11 p.m. Eastern Time. The debate is being hosted by Fox Business Network and will be held at the Ronald Reagan Presidential Library in Simi Valley, California. The event will be moderated by Fox Business Network host Stuart Varney and Fox News Channel host Dana Perino, as well as Univision anchor Ilia Calderón. The debate will be broadcast simultaneously on Fox News, with programming starting at 8:30 p.m. Eastern Time. Univision will also show the debate in Spanish and livestream it at UnivisionNoticias.com. The streaming platform Rumble will also show the debate.