Biden's lead with black voters continues to propel him in @QuinnipiacPoll. He also leads with women, moderates and older voters in the party. He struggles with voters under 35. Warren/Sanders splitting that vote https://t.co/XP3ENKBE7R pic.twitter.com/TwRerEgdlL

— Domenico Montanaro (@DomenicoNPR) August 28, 2019