Below is a breakdown of Republican contenders looking to unseat President Barack Obama. 

Michele Bachmann, US Representative from Minnesota's 6th District

Herman Cain, Businessman, Talk radio host

Newt Gingrich, Former US House Speaker & Representative

Jon Huntsman, Former Ambassador to China, Former Utah Governor

Gary Johnson, Former New Mexico Governor

Ron Paul, US Representative from Texas' 14th District

Rick Perry, Texas Governor

Mitt Romney, Former Massachusetts Governor

Rick Santorum, Former Pennsylvania Senator