Dr. Gregory J. Wawro is a Professor of Political Science at Columbia University. He specializes in American politics, including Congress, elections, campaign finance, judicial politics, and political economy, and in political methodology.Wawro's articles have appeared in The American Journal of Political Science, The Annual Review of Political Science, Critical Review, Legislative Studies Quarterly, the Journal of Law Economics and Organization, and Political Analysis. His first book, "Legislative Entrepreneurship in the U.S. House of Representatives," was published in 2010.