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Heritage Foundation | conservative |
American Enterprise Institute | conservative |
Center for Strategic and International Studies | conservative |
Hudson Institute | conservative |
Hoover Institution | conservative |
Progress and Freedom Foundation | conservative |
Manhattan Institute | conservative |
Competitive Enterprise Institute | conservative |
International Institute for Strategic Studies | conservative |
Family Research Council | conservative |
National Center for Policy Analysis | conservative |
Lexington Institute | conservative |
Discovery Institute | conservative |
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Reason Foundation | libertarian / conservative |
Cato Institute | libertarian / conservative |
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Washington Institute for Near East Policy | center-right |
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Brookings Institution | centrist |
Carnegie Endowment | centrist |
Institute for International Economics | centrist |
New America Foundation | centrist |
Aspen Institute | centrist |
Milken Institute | centrist |
National Bureau of Economic Research | centrist |
Council on Foreign Relations | centrist |
Freedom Forum | centrist |
Economic Strategy Institute | centrist |
Progressive Policy Institute | centrist |
Public Policy Institute of California | centrist |
New America Foundation | centrist |
Inter-American Dialogue | centrist |
Kaiser Family Foundataion | centrist |
RAND Corporation | centrist |
Asia Society | centrist |
Center for Politics | centrist |
Employee Benefit Research Institute | centrist |
Woodrow Wilson International Center for Scholars | centrist |
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Urban Institute | center-left |
Center for American Progress | center-left |
Carter Center | center-left |
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Citizens for Tax Justice | progressive |
Justice Policy Institute | progressive |
Center on Budget and Policy Priorities | progressive |
Center for Public Integrity | progressive |
Joint Center for Political and Economic Studies | progressive |
Worldwatch Institute | progressive |
Center for Defense Information | progressive |
Institute for Policy Studies | progressive |
Economic Policy Institute | progressive |
Center for Economic and Policy Research | progressive |