His research focuses on the processes of inclusion and exclusion in multiethnic societies. He has studied this within the context of ethnic parties and movements, military organization, inter-caste marriage, and skin color preferences in South Asia. His book manuscript, Mobilizing the Marginalized: Ethnic Parties without Ethnic Movements, is under contract at Oxford University Press. He has begun a second book-length project, Building National Armies in Multiethnic States. Professor Ahuja’s research has been supported by the National Endowment for the Humanities and the American Institute of Indian Studies, the National Bureau of Asian Research and the Woodrow Wilson Center for International Scholars, the Hellman Family Foundation, the University of California at Santa Barbara, and the University of Michigan.