WBEZ has posted more episodes of “Odyssey,” a show on which Obama has appeared four times. It’s pretty fascinating to listen to the former state senator participate in conversations about topics as diverse as the Constitution and urban policy. It’s particularly relevant because as G.D. and others noted in this thread, Obama’s background is in urban policy, but he hasn’t been talking about urban issues much.
Definitely check out the “Redistricting” episode. It’s a complex issue that affects black voters primarily.