Rep. Justin Amash of Michigan, a libertarian Republican, says recent surveillance leaks have "brought home" libertarian ideas. J. Scott Applewhite/AP hide caption

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During the 2012 campaign cycle, CNN was among several news networks that hosted Republican debates. Now, the GOP says it doesn't want to be on either that network or NBC. Joe Raedle/Getty Images hide caption

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Sen. Jim DeMint, R-S.C., speaks during to the Conservative Political Action Conference in Washington, D.C., on Feb. 9. Mandel Ngan/AFP/Getty Images hide caption

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Sen. Jon Tester, D-Mont., receives a kiss from his grandson Wednesday in Great Falls, Mont. Tester won re-election in a tight contest with Republican Rep. Denny Rehberg. Michael Albans/AP hide caption

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Annual "Biketoberfest" participants ride along Beach Street in downtown Daytona Beach, Fla., in 2010. Daytona Beach Visitors Bureau hide caption

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Voters these days often reward politicians who sit at either end of the ideological spectrum while punishing those seen as compromisers. hide caption

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