The Roper databank is the most comprehensive up-to-date resource for US public opinion and includes more than 500,000 questions and answers dating back to 1935. It includes questionnaires, reports, and datasets from every major US polling firm and is updated daily. It allows searches by question, topic, date, or survey organization.
"The Eagleton Center for Public Interest Polling (ECPIP) at the Eagleton Institute of Politics has been conducting regular polling in New Jersey since 1971. It is the oldest university-based statewide polling operation in the country. From 1983 to 2005, Eagleton conducted surveys in partnership with the Star-Ledger, the state's largest newspaper, under the banner of the Star-Ledger/Eagleton-Rutgers Poll."
KFF (Kaiser Family Foundation) is a nonprofit organization focusing on national health issues, as well as the U.S. role in global health policy. KFF develops and runs its own policy analysis, journalism and communications programs, sometimes in partnership with major news organizations. KFF serves as a nonpartisan source of facts, analysis and journalism for policymakers, the media, the health policy community and the public.
"Home to one of the largest catalogs of social science research data in the U.S. which includes the Harris Polls, North Carolina Vital Statistics, and the most complete collection of 1970s U.S. Census data. Also provides access to the UNC Dataverse, a web-based data repository, that enables scientists, research teams, scholarly journals, and other members of the research community to archive and share their own datasets."
"Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. They conduct public opinion polling, demographic research, content analysis and other data-driven social science research."
"WVS is a global network of social scientists studying changing values and their impact on social and political life. The survey, which started in 1981, seeks to use the most rigorous, high-quality research designs in each country."