POLI 100B CONGRESS
6 February 2007

3. Ideology, Party, and Polarization in Congress
   
   
   1. Summary: The Spatial (Geometric) Model of Voting
      
      
   2. Estimating Spatial (Geometric) Maps of Voting and Party Competition
      
      
   3. The Polarization of American Politics
      
      
      
      
4. Mo Fiorina's Keystone Argument