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
National Republican Senatorial Committee
Campaign committee for Republican U.S. Senate candidates
John Edwards
Former U.S. Senator from North Carolina
Tim Pawlenty
Former Governor of Minnesota; President and CEO of Financial Services Roundtable
John McCain
US Senator and Representative from Arizona
Mike DeWine
Governor of Ohio; former US Representative and Senator from Ohio