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LAS VEGAS, NV - OCTOBER 13:  Democratic presidential candidates U.S. Sen. Bernie Sanders (I-VT) (L) and Hillary Clinton take part in a presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada. Five Democratic presidential candidates are participating in the party's first presidential debate.  (Photo by Joe Raedle/Getty Images)
LAS VEGAS, NV - OCTOBER 13:  Democratic presidential candidates U.S. Sen. Bernie Sanders (I-VT) (L) and Hillary Clinton take part in a presidential debate sponsored by CNN and Facebook at Wynn Las Vegas on October 13, 2015 in Las Vegas, Nevada. Five Democratic presidential candidates are participating in the party's first presidential debate.  (Photo by Joe Raedle/Getty Images)

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    House Democrats face post-election shake up

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House Democrats face post-election shake up

House Democrats voted to delay the election of its leaders, signaling a possible change in party leadership. CNN's Jeff Zeleny reports.

House Democrats face post-election shake up

House Democrats voted to delay the election of its leaders, signaling a possible change in party leadership. CNN's Jeff Zeleny reports.