David A. Hopkins is Associate Professor of Political Science at Boston College, Massachusetts, where he has taught since 2010. He is the co-author of Asymmetric Politics: Ideological Republicans and Group Interest Democrats (with Matt Grossmann, 2016) and Presidential Elections: Strategies and Structures of American Politics (with Nelson W. Polsby, Aaron Wildavsky, and Steven E. Schier, 2015). He frequently serves as an expert commentator on American politics for news media organizations such as the Washington Post, Boston Globe, Vox, and National Public Radio, and blogs regularly about current events at HonestGraft.com.