A new poll has Bernie Sanders up 54 to 39 over Donald Trump. Meanwhile, Hillary Clinton no longer has a double-digit lead over Trump like she did just a month ago.
Bill Moyers and Michael Winship: Unless she steps down, the Democratic convention will be dominated by someone who represents everything that has gone wrong with Washington.
Salvatore Babones (@sbabones) is an associate fellow at the Institute for Policy Studies (IPS) in Washington, DC. His latest book is Sixteen for '16: A Progressive Agenda for a Better America, available now from Policy Press.