Matt Grossmann is Assistant Professor of Political Science at Michigan State University and Director of the Michigan Policy Network. He is the author of The Not-So-Special Interests: Interest Groups, Public Representation, and American Governance (Stanford University Press, 2012) and co-author of Campaigns & Elections: Rules, Reality, Strategy, Choice (W. W. Norton, 2011). His research appears in the Journal of Politics, American Politics Research, and twelve other journals. His next book, Artists of the Possible: Governing Networks and American Policy Change Since 1945 will be published by Oxford University Press. More information is available at www.mattg.org.