Roper iPoll Survey Database - Largest collection of public opinion poll data, 1935-present. Contains more than 825,000 searchable questions and over 25,000 datasets from both U.S. and international polling organizations. Topics include social issues, politics, pop culture, international affairs, science, the environment, and much more. When available, results charts, demographic crosstabs, time-series trends, and full datasets are provided for immediate download. Registration is required but free using your Princeton email. Many of iPoll's international surveys are not searchable at the question level, but downloadable as full datasets. See also Roper's Featured Projects, including their Health Poll Database and Researching Black American opinion.
Odum Institute - The Odum Institute has a large archive of public opinion data, including more than 1,000 Harris Polls from as early as 1958, the National Network of State Polls collection (775 studies from more than 25 states), the Carolina Poll (1977–2005), Monmouth University Polling Institute polls (2011+), the Southern Focus Poll (1992–2001), and some USA Today polls (1984–1993).
ICPSR (Inter-University Consortium of Political and Social Research) - ICPSR is the world's largest archive of digital social science data. You can search their data holdings by keyword or browse by thematic categories. They archive many surveys and exit polls. Must register for an account to in order download data.
You can find many public opinion topical surveys from our Data and Statistical Services site - use "Public Opinion" as a search term.
