Screen Shot 2020-09-23 at 11.42.38

Interest Group Lobbying and Partisan Polarization in the United States: 1999-2016

Screen Shot 2017-06-01 at 11.32.13

Automated Estimates of State Interest Group Populations

Interest Groups & Advocacy (with John Cluverius, 2020)

Screen Shot 2016-10-04 at 3.26.36 PM.png

National Policies, Agendas and Polarization of American State Legislatures

American Politics Research (2017)

Screen Shot 2016-10-04 at 3.35.49 PM.png

"The Letter After Your Name": Party Labels on Virginia Ballots

State Politics & Policy Quarterly (2015)



Interest groups and the evolution of gun and racial politics in the USA

Interest Groups & Advocacy (forthcoming)


A New Wave of Pluarlism in the Study of Environmental Policy in the USA

Interest Groups & Advocacy (2020)