The Republican National Convention (RNC) [Getty Images]

Scott Walker, governor of Wisconsin, speaks at the Republican National Convention (RNC) in Tampa, Florida, U.S., on Tuesday, Aug. 28, 2012. Delegates are gathered in Tampa at the 40th Republican National Convention to select former Massachusetts governor Mitt Romney as their nominee for the next president of the United States. Photographer: Daniel Acker/Bloomberg via Getty Images

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