The Roper Center for Public Opinion Research is the leading educational organization in the field of public opinion research.

iPOLL is the primary finding aid of the center’s database.  iPOLL is the most comprehensive and up-to-date resource for locating public opinion surveys conducted in the United States. iPOLL provides results from survey organizations such as the Gallup Organization and Harris Interactive; media organizations such as ABC News, CBS News, and CNN, and academic institutions such as the Princeton Survey Research Associates. Over 500,000 responses from surveys going back to 1935 are available for examining.  Users can search on a variety of topics such as the economy, education, U.S. elections, and healthcare. Additionally, users can access Topics at a Glance to locate survey questions and responses on current social, economic, and political issues.

By accessing the Education section, users can gain an understanding of the public opinion polling process.  They can learn the basic terminology of polling as well as information on sampling, margin of error, and tables.  Users can also explore careers in survey research.

The Roper Center was established in 1947.  Its main objective is to maintain an archive of data from polls and surveys conducted by major survey organizations for use by researchers, students, and journalists.