ACS is the premier source for detailed population and housing information.

Continuous series of survey data for electoral behavior and attitudes in the United States. ANES interviews are conducted before and after presidential elections and after national congressional elections. Post-election interviews include questions on voting behavior.

TAPS is a monthly online survey of a national probability sample from a panel of about 2,000 adults in the United States with a high response and retention rate (approximately 75-80% of the TAPS Panel complete each TAPS wave during the year). Recurring questions include a battery of approval measures, economic evaluations, ideology and party identification, candidate evaluations, and major issues, such as immigration and the Supreme Court. Data may include questions fielded by additional researchers.

Projects include the National Annenberg Election Survey and the The Institutions of American Democracy project, which examines the challenges facing the three branches of government. Data access requires registration.

A 50,000+ person national stratified sample survey allowing analysis at the congressional district level. Topics include registration/voting, political knowledge, ideology, and policy preferences related to key issues. Has both pre-election and post-election waves. Includes validated registration and turnout variables.

Data on contemporary American society including attitudes toward government, life, race, religion, and other social issues.

Over 450 surveys on multiple topics including more than 50 waves about the effects of the 2008 financial crisis, multiple waves on the Affordable Care Act, and multiple election surveys. Data access requires registration.

Questions about vote choice for president, Congress, gubernatorial races, important issues affecting the vote decision, presidential approval, and a number of current national, state, and local issues. Includes basic demographic variables, such as gender, race, education, income, and age. Data requires an application for access.

TESS provides researchers with shared access to a nationally representative online sample to allow them to conduct randomized social science experiments. Many of these studies utilize surveys with experimental treatments. Each study contains a project proposal and experimental results data.

Data-driven news based on U.S. and world polls, daily tracking and public opinion research.

Opinion polls on health, life, sports, media, and politics; some data dating back to 1970.

Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping America and the world.

Nonpartisan media company specializing in the collection, publication and distribution of public opinion polling information.

Survey data including 2016 election polls collected from 6000 US households twice a month and made instantaneously available.

State and national level polls on public policy issues, 2006+

National and state-wide polling. Covering topics including politics, elections and current issues.

The Afrobarometers are an ongoing series of surveys conducted amongst countries in sub-Saharan Africa, focusing on topics such as civil society, government, and state-society relations.

Analysis of how Europeans perceive their political institutions, and the EU and its institutions. Also includes attitudes on European citizenship and on issues linked to the priorities of the European Commission, notably free movement, the euro, migration and the stimulation of investment.

The ISSP is a cross-national collaboration programme conducting annual surveys on diverse topics relevant to social sciences including role of government, national identity, inequality, and more.

Provides summary level public opinion data for Latin America for 1995-2011, excluding 1999.

WorldPublicOpinion.org is an international collaborative project whose aim is to give voice to public opinion around the world on international issues.

The WVS is a series of international surveys conducted in a wide range of countries on attitudes on various social, economic, and political topics such as trust in various institutions, views on ideal forms of government, and notions of identity and equality.