Who's running and who could run in 2016?

POSTED: 10:41 AM Nov 08 2012   UPDATED: 11:05 AM May 30 2015

Former Maryland Gov. Martin O'Malley announced his candidacy for president on May 30, 2015. Check out other formally announced or potential 2016 candidates.

Martin O'Malley announces candidacy for president
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Former Maryland Gov. Martin O'Malley announced his candidacy on May 30 in Baltimore.

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