President Bill Clinton President Bill Clinton

An attendee wears a Hillary Clinton campaign sticker at a rally in Columbia, S.C., last month. Young voters in Iowa and New Hampshire have helped fuel Bernie Sanders' candidacy, but as the race moves to South Carolina, a lot could change. Bloomberg/Bloomberg via Getty Images hide caption

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Bloomberg/Bloomberg via Getty Images

In South Carolina, Young Black Voters Could Put Holes In Clinton's Firewall

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On Wednesday, Republican Rep. Darrell Issa's House Oversight and Government Reform Committee, finally got its turn to pummel the Obamacare rollout. The photo is from a Benghazi hearing in September 2013. Drew Angerer/Getty Images hide caption

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Drew Angerer/Getty Images

President Obama walks from the White House to Marine One on Friday. In an interview Thursday with NBC News, he apologized for breaking a promise regarding the Affordable Care Act. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

President Clinton shakes hands with House Speaker Newt Gingrich prior to giving his State of the Union address in January 1996. Denis Paquin/AP hide caption

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Denis Paquin/AP

President Obama, first lady Michelle Obama and former presidents Jimmy Carter and Bill Clinton at the March on Washington 50th anniversary celebration. Charles Dharapak/AP hide caption

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Charles Dharapak/AP