Herman Cain speaks prior to Florida's straw poll at the Orange County Convention Center on Saturday in Orlando. Cain was a clear winner in the non-binding poll. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Republican presidential candidate former Massachusetts Gov. Mitt Romney (left) passes behind Texas Gov. Rick Perry during a break in a Republican debate Monday in Tampa, Fla. Mike Carlson/AP hide caption

itoggle caption Mike Carlson/AP