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Democratic presidential candidate Hillary Rodham Clinton speaks during a community forum on healthcare, Tuesday, Sept. 22, 2015, at Moulton Elementary School in Des Moines, Iowa.
Democratic presidential candidate Hillary Rodham Clinton speaks during a community forum on healthcare, Tuesday, Sept. 22, 2015, at Moulton Elementary School in Des Moines, Iowa.

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    Clinton still leading polls despite Biden's uncertainty

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Clinton still leading polls despite Biden's uncertainty

Hillary Clinton stills leads in the polls, but what impact could a possible Joe Biden campaign have on her numbers? CNN's Jeff Zeleny reports.

Clinton still leading polls despite Biden's uncertainty

Hillary Clinton stills leads in the polls, but what impact could a possible Joe Biden campaign have on her numbers? CNN's Jeff Zeleny reports.