Norman Schofield is William R. Taussig Professor of Political Economy at Washington University, St. Louis, USA.

• 1. Introduction 2. Social Choice 3. Voting Rules 4. The Core 5. The Heart 6. A Spatial Model of Coalition 7. A Spatial Model of Elections 8. Activist Coalitions 9. Political Coalitions in the United States 10. Conclusion

Norman Schofield is William R. Taussig Professor of Political Economy at Washington University, St. Louis, USA.

• 1. Introduction 2. Social Choice 3. Voting Rules 4. The Core 5. The Heart 6. A Spatial Model of Coalition 7. A Spatial Model of Elections 8. Activist Coalitions 9. Political Coalitions in the United States 10. Conclusion

Norman Schofield is William R. Taussig Professor of Political Economy at Washington University, St. Louis, USA.

• 1. Introduction 2. Social Choice 3. Voting Rules 4. The Core 5. The Heart 6. A Spatial Model of Coalition 7. A Spatial Model of Elections 8. Activist Coalitions 9. Political Coalitions in the United States 10. Conclusion