| Battleground Poll: Series of bi-partisan public opinion research polls produced jointly by the Tarrance Group and Lake Snell Perry and Associates. |
| IRSS Poll Item Database Query Page: |
| NORC--The National Opinion Research Center: The National Opinion Research Center (NORC) conducts survey research in the public interest for government agencies, educational institutions, private foundations, non-profit organizations, and private corporations. |
| PollingReport.com - Public Opinion Online: PollingReport.com. A nonpartisan resource on trends in American public opinion. |
| RhodesCook.com: A former Congressional Quarterly reporter illustrates current voting trends within the American electorate using maps, tables and text. |
| The American National Election StudiesProduces data: A collaboration of Stanford University and the University of Michigan, producing data on voting, public opinion, and political participation. |
| The People and the Press: Web site for the Pew Research Center, an opinion research group that studies attitudes toward the press, politics and public policy issues. |
| The Roper Center for Public Opinion Research: Roper Center is the largest library of public opinion data in the world. The Center's mission focuses on data preservation and access, education, and research on public opinion. |
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