Steve Stivers
US Representative from Ohio; chairman, National Republican Congressional Committee
Sherrod Brown
Democratic US Senator from Ohio (2007-present); former US Rep from Ohio (1993-2007)
Patrick Tiberi
US Representative from Ohio
Rob Portman
US Senator from Ohio (2011-present); former US Representative (1993-2007); former dir. OMB
John Kasich
CNN political commentator, former Ohio governor
Mitt Romney
U.S. senator from Utah, former Massachusetts governor
National Republican Senatorial Committee
Campaign committee for Republican U.S. Senate candidates