Collection of public opinion information from the United States and dozens of countries around the world. The database includes the full text of the questions and responses covering a broad range of issues since 1986.

Provides access to data files from polls covering a range of social, business, and policy issues, as well as to iPOLL, its question-level online database of survey results since 1935. Includes most Gallup polls. Note: Roper studies and databases may be used only by current MIT students, faculty, and staff; registration required.

Micro-level public opinion polls available from this vast archive of social science data.

Survey of democratic public opinion and behavior in the Americas; micro-level data. Geographic coverage: Bolivia, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, and Panama. 2004 - present.

Searchable database of public opinion questions on health issues.

Annual public opinion survey in 18 Latin American countries; micro-level data. Data for all but the most recent year are available for free on their site back to 1995.