Acton Institute, Adam Ferguson Institute, Alabama Policy Institute, Alexis de Tocqueville Institution, Allegheny Institute, America's Future Foundation, American Constitutional Law Foundation, American Enterprise Institute, American Foreign Policy Council, American Freedom Center

Beacon Hill Institute, Belcher Foundation, Bradley Foundation, Brookings Institution, Buckeye Institute

California Institute of Public Affairs, Calvert Institute for Policy Research, Carey Center for Democratic Capitalism, Carnegie Council on Ethics and International Affai, Carter Center, Cascade Policy Institute, Cato Institute, Center for American Progress, Center for Defense Information, Center for Economic and Policy Research

Demos, Discovery Institute, Drum Major Institute, Dumont Institute

Economic Opportunity Institute of Seattle, Economic Policy Institute (EPI), Edmund G. "Pat" Brown Institute of Publi, Employment Policy Foundation, Entertainment Industries Council, Inc., Ethan Allen Institute, Ethics and Public Policy Center, Evergreen Freedom Foundation

Faith & Reason Institute, Family First, Financial Markets Center, Foundation for Economic Education (FEE), Free Congress Foundation, Frontiers of Freedom, Future of Freedom Foundation

George C. Marshall Institute, Georgia Public Policy Foundation, Goldwater Institute', Grassroot Institute of Hawaii, Great Plains Public Policy Institute

Heartland Institute, Heritage Foundation, Hispanic American Center for Economic Research, Hoover Institution, Hudson Institute

Independence Institute, Independent Institute, Information for Decision Making (IFDM), Institute for American Values, Institute for Contemporary Studies, Institute for Policy Innovation (IPI), Institute for Policy Studies, Institute for the Study of Civic Values - ISCV, Institute for Women's Policy Research, Institute of Science, Technology and Public Policy

James Madison Institute, John Locke Foundation, Joint Center for Political and Economic Studies, Josiah Bartlett Center for Public Policy

Levy Economics Institute, Lincoln Institute of Public Opinion Research, Locke Institute

Mackinac Center for Public Policy, Maine Heritage Policy Center, Manhattan Institute, Manpower Demonstration Research Corporation, Mathematica Policy Research, McGregor Consulting Group, Mercatus Center, Minaret of Freedom Institute, Morrison Institute for Public Policy

Nation Institute, National Bureau of Economic Research, National Center for Policy Analysis, National Center for Public Policy Research, National Democratic Institute for International Af, National Institute for Labor Relations Research, National Legal Foundation, National Priorities Project, National Sociale Norms Resource Center, Nautilus Institute for Security and Sustainable De

Ohio Roundtable, Oregon Center for Public Policy, Oregon Progress Forum

Pacific Council On International Policy, Pacific Research Institute for Public Policy, Palmer R. Chitester Fund, Palmetto Institute, Pioneer Institute, Political Research Associates, Priorities Institute, Progressive Policy Institute, Project for the New American Century, Public Interest Institute

Quixote Center for faith-based social justice

Rand Corporation, Reason Foundation, Reason Public Policy Institute (RPPI), Rio Grande Foundation

South Carolina Policy Council, Sutherland Institute

Thoreau Institute, Today Foundation

Urban Institute, Urban Renaissance Institute

Virginia Institute for Public Policy

Weidenbaum Center, Wildflowers Institute, Woodrow Wilson International Center for Scholars, Worldwatch Institute