By Joe Donahue
http://stream.publicbroadcasting.net/production/mp3/wamc/local-wamc-908908.mp3
Albany, NY – WAMC's Joe Donahue speaks with historian and author William Jelani Cobb about his new book titled, The Substance of Hope. The book covers President Obama's victory in the primary over opposing canidate Hillary Clinton and the implication of demographic voting patterns.