Warren gains, Harris slips — and the room for movement is vast

A gain for Elizabeth Warren and a slip in support for Kamala Harris place Joe Biden, Bernie Sanders and Warren atop the field in the latest ABC News/Washington Post poll, days in advance of the Sept. 12 Democratic debate in Houston, sponsored by ABC and Univision.

The poll finds Biden, this summer’s front-runner, far better rated for electability than for being “the best president for the country.” Still, his supporters are more committed than those of other candidates, and electability has advanced as a priority, helping him hold his ground — albeit not advance. CONT.

Gary Langer, ABC News