| Brookings Institution: An independent research and policy institute with a left-liberal inclination, which seeks to improve the performance of American institutions, the effectiveness of government programs, and the quality of U.S. public policies. |
| Center for American Progress: A think tank offering policy proposals, talking points, events, news and columns. Weekly email newsletter Progress Report. |
| Center for Defense Information: An institute monitoring the military. CDI provides independent analysis in the form of research papers, educational videos, and free e-mail and print newsletters. |
| Center for Law and Social Policy: CLASP is a non-profit organization with expertise in both law and policy affecting the poor. Through education, policy research and advocacy, CLASP seeks to improve the economic security of low-income families with children and secure access for low-income persons. |
| Center for National Policy: CNP undertakes research and analysis to frame options and to formulate policy recommendations, focusing activities in economic analysis, equal opportunity, community studies and foreign policy. |
| Center on Budget and Policy Priorities: A public policy advocacy organization specializing in federal budget issues from a low-income perspective. |
| Century Foundation: A research foundation that undertakes timely and critical analyses of major economic, political, and social institutions and issues |
| Economic Policy Institute: A nonpartisan think tank that seeks to broaden the public debate about strategies to achieve a prosperous and fair economy. |
| Institute for Policy Studies: An institute for progressive research and action to create a more responsible society built around the values of justice, nonviolence, sustainability, and decency. |
| Joint Center for Political and Economic Studies: A U.S. national, nonprofit institution that conducts research on public policy issues of special concern to African Americans. |
| National Democratic Institute for International Affairs: Non-profit institute associated with the U.S. Democratic Party, working to strengthen and expand democracy worldwide. |
| Progressive Policy Institute: A public policy institute shaping the Third Way agenda with progressive legislative solutions. |
| Urban Institute: An institute investigating and analysing U.S. social and economic problems and issues, including the New Federalism, welfare and welfare-to-work, Medicare, and disabilities issues. |
| Worldwatch Institute: Analyzes interdisciplinary environmental data from around the world, providing information on how to build a sustainable society. |
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