Democratic Party

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Specialists say the recent episodes of weighing in on issues like immigration and trade are part of President Obama's larger effort to remain relevant during his so-called "lame-duck" period and to not let Hillary Rodham Clinton take the helm of the Democratic Party, despite her status as the 2016 presidential front-runner. (Associated Press)

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Hillary Rodham Clinton has been under intense pressure from her Democratic Party's left wing to embrace a plan to expand Social Security benefits and pay for it with increased taxes on wealthy Americans. (Associated Press)

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Democratic presidential candidate Hillary Rodham Clinton waves as she arrives at the Iowa Statehouse to meet with Democratic Party lawmakers, Wednesday, April 15, 2015, in Des Moines, Iowa. (AP Photo/Charlie Neibergall) ** FILE **

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Sen. Elizabeth Warren of Massachusetts has amassed a solidly liberal record, but it's the issues on which she has taken the lead that are winning over the Democratic Party's left wing, who say she is a fighter more than anything else. (Associated Press)

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House Minority Leader Nancy Pelosi, of California, talks as she and Rep. Steve Israel, D-N.Y., chairman of the Democratic Congressional Campaign Committee receive updates of Election Eay information from Greg Jackson, field director of Democratic Congressional Campaign Committee at the Democratic Party headquarters in Washington, Tuesday, Nov. 4, 2014. (AP Photo/Manuel Balce Ceneta)

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Illustration on the Democratic party in trouble by William Brown/Tribune Content Agency

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ASSEMBLYWOMAN ARAVELLA SIMOTA (D-NEW YORK) Aravella Simota is a member of the Democratic Party, who currently represents parts of western Queens, including Astoria and parts of Long Island City in the New York State Assembly. She is the first woman elected to office from her district, and is the first Greek-American woman elected to office in New York.

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RIELLE HUNTER - Rielle Hunter is actress and film producer notorious for having had an affair with and conceiving a child with 2004 Democratic Party vice-presidential nominee John Edwards.

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FILE - This May 3, 2014 file photo shows Gary King speaking during the Democratic Party for New Mexico 2014 Governor Forum in Albuquerque, NM. King is among five Democrats running for the party’s gubernatorial nomination in New Mexico’s June 3 primary election. The winner will face Republican Gov. Susana Martinez in the November general election. (AP Photo/Craig Fritz, file)

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FILE - This May 3, 2014 file photo shows Linda Lopez speaking during the Democratic Party or New Mexico 2014 Governor Forum in Albuquerque, NM. Lopez is among five Democrats running for the party’s gubernatorial nomination in New Mexico’s June 3 primary election. The winner will face Republican Gov. Susana Martinez in the November general election. (AP Photo/Craig Fritz, file)

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FILE - This May 3, 2014 file photo shows Lawrence Rael speaking during the Democratic Party for New Mexico 2014 Governor Forum in Albuquerque, NM. Rael is among five Democrats running for the party’s gubernatorial nomination in New Mexico’s June 3 primary election. The winner will face Republican Gov. Susana Martinez in the November general election. (AP Photo/Craig Fritz)

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FILE - This May 3, 2014 file photo shows Alan Webber speaking during the Democratic Party for New Mexico 2014 Governor Forum in Albuquerque, NM. Webber is among five Democrats running for the party’s gubernatorial nomination in New Mexico’s June 3 primary election. The winner will face Republican Gov. Susana Martinez in the November general election. (AP Photo/Craig Fritz, file)

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FILE - This May 3 2014 file photo shows Howie Morales speaking during the Democratic Party for New Mexico 2014 Governor Forum in Albuquerque. Morales is among five Democrats running for the party’s gubernatorial nomination in New Mexico’s June 3 primary election. The winner will face Republican Gov. Susana Martinez in the November general election. (AP Photo/Craig Fritz, file)