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Democratic presidential candidates Jim Webb, Sen. Bernie Sanders (I-VT), Hillary Clinton and Martin O'Malley take part in presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada.
Democratic presidential candidates Jim Webb, Sen. Bernie Sanders (I-VT), Hillary Clinton and Martin O'Malley take part in presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada.

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    First Democratic debate: How did they do?

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First Democratic debate: How did they do?

The five Democratic candidates took the debate stage -- how did they do? John Berman reports.

First Democratic debate: How did they do?

The five Democratic candidates took the debate stage -- how did they do? John Berman reports.