Bernie Sanders conceded the Democratic Presidential nomination to Hillary Clinton this morning and said he intends to do everything he can to make certain she defeats Donald Trump.

He called his campaign the start of a political revolution that will continue and pointed to the Democratic Party's most progressive platform ever as the result.

Now, the question is whether Sanders enthusiastic supporters will show up to vote in November, and whether Clinton will be their Plan B.

Guests:

John Nichols, National Affairs Correspondent for The Nation; he tweets @NicholsUprising

Matt Bennett, founder and senior vice president of the think tank Third Way. He served as Deputy Assistant to the President for Intergovernmental Affairs in the first Bill Clinton White House.