New poll shows Biden leading Democratic 2020 hopefuls

A new CNN poll shows former Vice President Joe Biden leading a crowded Democratic field of potential 2020 presidential contenders — with Sen. Bernie Sanders in a distant second.

The big picture: While a poll this early doesn't really have any predictive value for the Democrats' eventual nominee, the fragmented, wide-open field is most notable. As the Washington Post's Dave Weigel points out, with 65% of the party's support, Hillary Clinton led a much smaller field by a much greater margin in the same poll in December 2014.