UPDATE: Head of U.S. nuclear safety agency to step down
Denver, Colorado Tuesday, February 7, 2012
Mitt Romney was in Colorado and addressed supporters at the Tivoli Student Center located at the University of Colorado-Denver. In his remarks Romney said that, "This was a good night for Rick Santorum, but I expect to become your nominee."
Updated: Wednesday, February 8, 2012 at 10:16am (ET)