To fight hyperpartisanship and redistricting aimed at keeping politicians safe in their district, some states are experimenting with new primary voting systems. Jae C. Hong/AP hide caption

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Demonstrators march toward the U.S. Capitol on Saturday to demand that Congress investigate the National Security Agency's mass surveillance programs. Fang Zhe/Xinhua/Landov hide caption

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The Capitol is seen under an overcast sky at dawn on Monday. J. Scott Applewhite/AP hide caption

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