Pradeep Chhibber studies the politics of India, political parties and party systems. Chhibber examines party aggregation in great detail in a book written with Ken Kollman published by Princeton University Press in 2004, entitled The Formation of National Party Systems: Federalism and Party Competition in Britain, Canada, India and the United States. This book examines why the United States developed a two party system whereas Canada has many more parties competing for power. The book won the Leon Epstein Award in 2005 for the best book published in the previous two years in the area of political parties and organizations. Dr. Chhibber is Director of the Institute of International Studies.