A collaboration of Stanford University and the University of Michigan, producing data on voting, public opinion, and political participation.

Since 1972, the General Social Survey (GSS) has provided politicians, policymakers, and scholars with a clear and unbiased perspective on what Americans think and feel about such issues as national spendi​ng priorities, crime and punishment, intergroup relations, and confidence in institutions.

This database includes public opinion survey questions from national CBS News polls conducted since 1976. This freely available online archive can be searched by topic or keyword, and responses are presented in graphs and tables.

CESSDA provides large scale, integrated and sustainable data services to the social sciences. It brings together social science data archives across Europe, with the aim of promoting the results of social science research and supporting national and international research and cooperation.

This project represents the largest, most careful and systematic comparative survey of attitudes and values toward politics, power, reform, democracy and citizens' political actions in Africa, Asia, Latin America and the Arabic region.

Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping America and the world. It conducts public opinion polling, demographic research, media content analysis and other empirical social science research.