He earned a PhD in Political Science from Columbia University where he previously earned a Master's degree in public Administration and Public Policy from the School of International and Public Affairs. Dr. Cortina specializes on Latino politics, survey research and immigration. His work has been published in scholarly and policy journals such as the Journal of Policy Studies, American Politics Research Journal, Foreign Affairs in Spanish, Harvard Journal of Hispanic Policy and Migration and Development. His books include “Red State, Blue State, Rich State, Poor State: Why Americans Vote the Way They Do” (Princeton University Press), “A Quantitative Tour of the Social Sciences” (Cambridge University Press) and “New Perspectives on International Migration and Development” (Columbia University Press).