U.S. Senate Majority Leader Harry Reid of Nevada (left), shown earlier this month, and former House Minority Leader Richard Gephardt (D-MO), pictured on Jan. 4, 1996, speak with the media about the policies related to government shutdowns. Alex Wong/Getty Images (left)/Ron Edmonds/AP (right) hide caption

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President Ronald Reagan, shown speaking on Feb. 8, 1982, has clearly been on President Obama's mind, says presidential historian Douglas Brinkley. Getty Images hide caption

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President Obama, shown during a Dec. 22 news conference, will focus largely on achieving economic recovery in his State of the Union address, says press secretary Robert Gibbs. Brendan Hoffman/Getty Images hide caption

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Former Florida Gov. Jeb Bush waves as he is introduced to the crowd during inauguration ceremonies for Republican Rick Scott on Jan. 4 outside the Old Capitol in Tallahassee, Fla. On Thursday, Bush and other Republican leaders are launching a new effort to reach out to Hispanic voters. Chris O'Meara/AP hide caption

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The Obamas depart Monday after observing a moment of silence to honor those killed and wounded during Saturday's shooting in Tucson, Ariz. Mark Wilson/Getty Images hide caption

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President Obama answers a question during a press conference in the Eisenhower Executive Office Building on Dec. 22, 2010. As the GOP takes over the House, how will the president respond to divided government? Chris Kleponis/AFP/Getty Images hide caption

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Rand Paul, a Tea Party favorite elected to the Senate from Kentucky, greets supporters during an election night party in Bowling Green. Tom Pennington/Getty Images hide caption

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Mark Meckler, national coordinator for the Tea Party Patriots, wears a Tea Party pin at a July 21 news conference on Capitol Hill. After the elections, Meckler says, the movement with "really find its stride." Alex Brandon/AP hide caption

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House Minority Leader John Boehner (far right), the likely speaker in a GOP-led House, with other Republican House leaders, including (from left) Candice Miller (MI), House Minority Whip Eric Cantor (VA), Peter Roskam (IL), Cathy McMorris Rodgers (WA) and Kevin McCarthy (CA). Chip Somodevilla/Getty Images hide caption

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Ohio Gov. Ted Strickland (left) and Republican challenger John Kasich at an Oct. 7 debate in Toledo. Nathan Daschle, the executive director of the Democratic Governors Association, points to the help Strickland's efforts gave to the Obama campaign in 2008 as an example of how governors can influence the presidential election. Andy Morrison/AP hide caption

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President Obama has many factors to weigh as he chooses a replacement for Chief of Staff Rahm Emanuel. Charles Dharapak/AP hide caption

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A demonstrator holds up a pocket-sized copy of the U.S. Constitution during a health care rally organized by The American Grassroots Coalition and The Tea Party Express on Capitol Hill in March. Gerald Herbert/AP hide caption

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