I am a professor of government at the University of Maryland, College Park.  I have been on the faculty there since January 1992.  From 1989 to 1991 I worked on Capitol Hill in the U.S. Senate, then did a brief stint at the Department of Housing and Urban Development in the Office of Policy Development and Research. My recent research and teaching interests include American politics, political geography, voting and elections, state politics, U.S. immigration policy, and public opinion.

I am the editor of American Politics Research, a scholarly journal specializing in the empirical study of American political behavior and institutions.

As a specialist in geographic and demographic targeting for campaigns and elections, I am available to consult with state and local political parties, interest groups, candidates, and others interested in outreach to particular constituencies.