Senate Majority Leader Harry Reid, D-Nev. speaks to the media at the Capitol in March. T.J. Kirkpatrick/Getty Images hide caption

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Ted Cruz, Republican candidate for the U.S. Senate, speaks at a rally organized by the Tea Party Express in San Antonio in May. Hernan Rozemberg/AP hide caption

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Former Arkansas Gov. Mike Huckabee delivers remarks to the Conservative Political Action Conference in February in Washington, D.C. Chip Somodevilla/Getty Images hide caption

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