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Ahead on the 7/31 Maddow show

Tonight's guests:Barney Frank, former Democratic congressman from MassachusettsBrian Sims, Pennsylvania state representative Pastor David Bullock, founder of

Tonight's guests:

  • Barney Frank, former Democratic congressman from Massachusetts
  • Brian Sims, Pennsylvania state representative 
  • Pastor David Bullock, founder of Change Agent Consortium

And here's senior producer Cory Gnazzo with a look at what we're working on tonight: