Mitt Romney
U.S. senator from Utah, former Massachusetts governor
Republican National Committee
U.S. political committee that leads the Republican Party of the U.S., a/k/a The Grand Ol' Party/GOP
John McCain
US Senator and Representative from Arizona
Brad Sherman
US Representative D-California (1997-present)
Rick Perry
former Governor of Texas; former Trump Energy Secretary
Rudy Giuliani
Trump adviser; former mayor of New York City
Josh Mandel
far-right Ohio Republican congressman
Eric Cantor
Former US Representative from Virginia/House Majority Leader; Vice Chairman and Managing Director, Moelis & Company
