Schoolchildren tour the bus that civil rights icon Rosa Parks made famous when she refused to give up her seat. Bill Pugliano/Getty Images hide caption

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Campaign posters are seen in a snowbank outside a polling place in January 2008 in Manchester, N.H. Mario Tama/Getty Images hide caption

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Reince Priebus talks with members during the Republican National Committee meeting on Friday in Oxon Hill, Md. Priebus was selected as RNC chairman after seven rounds of voting. Pablo Martinez Monsivais/AP hide caption

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Mehlman, on NBC's "Meet the Press" in August 2006, makes a point to host David Gregory. Chip Somodevilla/Getty Images Europe hide caption

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