John Podesta was Bill Clinton's White House chief of staff from 1998 to 2001, helping the president survive impeachment. Chip Somodevilla/Getty Images hide caption

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Sen. Elizabeth Warren, a Massachusetts Democrat, is leading a push to increase Social Security benefits. But her whole party is not in agreement on the issue. Jacquelyn Martin/AP hide caption

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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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A woman looks at the HealthCare.gov insurance exchange site on Tuesday in Washington, D.C. Karen Bleier/AFP/Getty Images hide caption

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Former Secretary of State Hillary Clinton speaks during the annual Clinton Global Initiative meeting in New York City on Wednesday. Ramin Talaie/Getty Images hide caption

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President Obama arrives on the South Lawn of the White House on Friday. Evan Vucci/AP hide caption

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Sen. Marco Rubio, R-Fla., walks toward the stage as he is introduced at a Faith and Freedom Coalition conference in June. Charles Dharapak/AP hide caption

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Texas was decidedly red on the electoral map in NBC News' "Election Plaza" in New York's Rockefeller Center in 2008. Do Democrats really have a chance to turn it blue in the future? Mary Altaffer/AP hide caption

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President Obama answers questions during a news conference on April 30. Charles Dharapak/AP hide caption

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Protesters demonstrate in front of the U.S. Capitol on April 10. Allison Shelley/Getty Images hide caption

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Karl Rove and the big donors behind his Crossroads superPAC have formed a new group, the Conservative Victory Project, to vet and recruit Republican Senate candidates. Rich Pedroncelli/AP hide caption

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Republican National Committee Chairman Reince Priebus, shown here in August at the Republican National Convention, has named a five-member task force to conduct a review of what went wrong for his party in the November elections. Charles Dharapak/AP hide caption

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