I am an Associate Professor of Political Science at the University of Pennsylvania, where I have taught since 2001. My research focuses on the politics of inequality and social policy in the rich democracies, particularly the countries of western Europe. I have special interests in comparative health policy and the politics of health inequalities; party system change; southern European politics; and the politics of aging.

At Penn, I am faculty director of the Penn In Washington Program, and I co-direct the Penn-Temple European Studies Colloquium. I am on the advisory board of the Italian Studies Program, and a Senior Fellow of the Leonard Davis Institute of Health Economics.

I edit Socio-Economic Review, a multi-disciplinary journal focusing on analytical, political and moral questions arising at the intersection of economy and society, and serve on the editorial boards of Perspectives in Politics, Comparative Political Studies, Polity, Journal of European Social Policy, and Journal of Health Politics, Policy and Law.┬áIn the wider world, I have recently served as an expert advisor to the World Health Organization’s European regional office, treasurer of the Council for European Studies, and chair of the Health Politics and Policy section of the American Political Science Association.