American Enterprise Institute
Annenberg Public Policy Center
Carnegie Endowment for International Peace
Center for Governmental Studies
Center for European Research at Mannheim University
Center for the Study of Islam & Democracy
Centre for the Study of Public Policy
Council for European Studies- Columbia University
European Consortium of Political Research
German Foreign Policy
Hoover Institution
Institute for Social and Economic Research and Policy
International Idea
Oxford Internet Institute
RAND
The Aspen Institute
The Brookings Institution
The Center for European Policy Studies
The Center for the Study of Global Governance
The Institute on Religion and Democracy
The Independent Institute
The Interdisciplinary Centre for Comparative Research in the Social Sciences
The Jean Monnet Project
The Joan Shorenstein Center
The Mario Einaudi Center for International Studies
The National Endowment for Democracy
The National Opinion Research Center
The Pew Research Center for the People and the Press
The Public Policy Institute of California
The Roper Center for Public Opinion Research
Yale Center for International and Area Studies