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Ahead on the 12/4 Maddow show

Tonight's guest list and video preview of tonight's show.

Tonight's guests include:

Edwin Lyman, Union of Concerned Scientists

Michael Smerconish, Sirius XM radio show host, spent eight weeks trying to navigate Healthcare.gov until he successfully signed up this week

Ed Pilkington, U.S. chief reporter for The Guardian

Looking forward to a wonderful show tonight -- here is executive producer Bill Wolff, with a preview: 

Big show tonight

Dec. 5, 201304:19