On episode 107 of This is Democracy, Jeremi brings on Dr. Julian Zelizer to discuss the divisive partisanship in politics and the some of the roots of today's radical conservative movement.

To set the scene, Zachary reads his poem entitled, "The Sour Grapes."

Julian E. Zelizer is one of the leading experts on modern American political history. He is the Malcolm Stevenson Forbes, Class of 1941 Professor of History and Public Affairs at Princeton University. Professor Zelizer is the author and editor of 19 books on American political history, including: Taxing America: Wilbur D. Mills, Congress, and the State, 1945-1975; The Fierce Urgency of Now: Lyndon Johnson, Congress, and the Battle for the Great Society; and Fault Lines: A History of the United States Since 1974, co-authored with Kevin Kruse. Most recently, Zelizer published Burning Down the House: Newt Gingrich, The Fall of a Speaker, and the Rise of the New Republican Party.