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Open Image ModalSen. Bernie Sanders (I-VT) delivers remarks on the first day of the Democratic National Convention at the Wells Fargo Center, July 25, 2016 in Philadelphia, Pennsylvania. (credit:Chip Somodevilla via Getty Images)
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Open Image ModalSenator Cory Booker speaks during Day 1 of the Democratic National Convention. (credit:SAUL LOEB via Getty Images)
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Open Image ModalUS First Lady Michelle Obama addresses delegates on Day 1 of the Democratic National Convention. (credit:ROBYN BECK via Getty Images)
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Open Image ModalUS Senator Elizabeth Warren greets Joseph P. Kennedy, III during Day 1 of the Democratic National Convention. (credit:ROBYN BECK via Getty Images)
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Open Image ModalVermont Senator and former Democratic presidential candidate Bernie Sanders addresses delegates. (credit:SAUL LOEB via Getty Images)
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Open Image ModalA supporter of Vermont Senator Bernie Sanders cries as the former Democratic presidential candidate addresses the Democratic National Convention. (credit:NICHOLAS KAMM via Getty Images)
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Open Image ModalBaltimore Mayor Stephanie Rawlings-Blake bangs the gavel calling to order the first day of the Democratic National Convention. (credit:Aaron P. Bernstein via Getty Images)
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Open Image ModalSinger Demi Lovato performs on stage during the first day of the Democratic National Convention. (credit:Chip Somodevilla via Getty Images)
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Open Image ModalSupporters of Sen. Bernie Sanders (I-VT) stand and cheer as he delivers remarks. (credit:Joe Raedle via Getty Images)
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Open Image ModalFirst lady Michelle Obama acknowledges the crowd after delivering remarks. (credit:Aaron P. Bernstein via Getty Images)
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Open Image ModalSenator Elizabeth Warren, a Democrat from Massachusetts, gestures on stage during a walk through before the start of the Democratic National Convention (DNC) in Philadelphia. (credit:Bloomberg via Getty Images)
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Open Image ModalBalloons fall from the ceiling as preparations continue ahead of the 2016 Democratic National Convention in Philadelphia. (credit:Mark Kauzlarich / Reuters)
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Open Image ModalSinger Robert Hill rehearses the National Anthem. (credit:Bloomberg via Getty Images)
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Open Image ModalWorkers gather balloons that fell from the ceiling. (credit:Jim Young / Reuters)
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Open Image ModalU.S. House Minority Leader Nancy Pelosi (D-CA) and two of her grandsons greet comedian Stephen Colbert (R) on the floor. (credit:Mark Kauzlarich / Reuters)
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Open Image ModalA worker vacuums carpeting before the start of the Democratic National Convention. (credit:Bloomberg via Getty Images)
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Open Image ModalThe Reverend Jesse Jackson, Sr. claps for Paul Simon as he does a sound check. (credit:The Washington Post via Getty Images)
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Open Image ModalU.S. House Minority Leader Nancy Pelosi (D-CA) walks with two of her grandsons. (credit:Mike Segar / Reuters)
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Open Image ModalPaul Simon does a sound check. (credit:The Washington Post via Getty Images)
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Open Image ModalA member of the Colorguard rehearses. (credit:Bloomberg via Getty Images)
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Open Image ModalProtesters outside the Democratic National Convention. (credit:Julia Craven/Huffington Post)
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Open Image ModalProtesters outside the Democratic National Convention. (credit:Julia Craven/Huffington Post)
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Open Image ModalProtesters outside the Democratic National Convention. (credit:Julia Craven/Huffington Post)
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Open Image ModalProtesters outside the Democratic National Convention. (credit:Julia Craven/Huffington Post)
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Open Image ModalProtesters outside the Democratic National Convention. (credit:Julia Craven/Huffington Post)
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Open Image ModalPHILADELPHIA, PA - JULY 25: Delegates stand during Sen. Elizabeth Warren (D-MA) speech on the first day of the Democratic National Convention at the Wells Fargo Center, July 25, 2016 in Philadelphia, Pennsylvania. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Chip Somodevilla/Getty Images) (credit:Chip Somodevilla via Getty Images)