Howard Dean helped the Democrats take control of the House in 2006, and his fifty-state strategy laid the groundwork for Obama’s exhaustive grassroots campaign. So why is he out of the picture in Washington these days?

Ari Berman talks with the hosts of Morning Joe about his new book, Herding Donkeys: The Fight to Rebuild the Democratic Party and Reshape American Politics, why the right manages to harness their movements better than the left and what it will take to revitalize the Democratic Party.

—Braden Goyette