Public Opinion and Social Attitudes Data: United States

Data sets on candidates, parties, popular and electoral vote totals, and voter turnout.

See http://library.cqpress.com/elections/static.php?page=about

The Inter-university Consortium for Political and Social Research (ICPSR), established in 1962, is an integral part of the infrastructure of social science research. ICPSR maintains and provides access to a vast archive of social science data for research and instruction. Search this site for holdings. Data downloads are free of charge by registering with an MSU email address.

Providing eight decades of insight, the Gallup Brain is a searchable, living record of public opinion dating back to 1935.

Gallup Analytics is an online platform that provides subscribers with access to nearly a century of U.S. data and a decade of global tracking data from the Gallup World Poll.

Provided by the Roper Center for Public Opinion Research at Cornell University, Roper iPoll is the largest collection of public opinion poll data with results from 1935 to the present. Roper iPoll contains nearly 800,000 questions and over 23,000 datasets from both U.S. and international polling firms. Surveys cover any number of topics including, social issues, politics, pop culture, international affairs, science, the environment, and much more. When available, results charts, demographic crosstabs and full datasets are provided for immediate download.

Most comprehensive collection of public opinion, from the United States and more than 80 other countries. The database includes the full text of the questions and responses covering a broad range of issues.
Polling the Nations began in 1981 as a database of American public opinion published in a book format (American Public Opinion Index). Over the years the database expanded to include surveys in Europe, Canada, Mexico, Africa, and Asia, in an electronic format.