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
Joe Lieberman
Former US Senator for CT (1989-2013); Vice President nominee (2000)
John McCain
US Senator and Representative from Arizona
American Crossroads
Super PAC that raises funds from donors to advocate for certain candidates of the Republican Party.
Norm Coleman
Lobbyist at Hogan Lovells; Former US Senator from Minnesota
Chris Dodd
President & CEO of MPAA; former Democratic US Senator from CT
Gordon Harold Smith
US Senator from Oregon
Mel Levine
Gibson, Dunn & Crutcher