Explore the Roper Center Archives

The Roper Center holds polling data ranging from the 1930s, when survey research was in its infancy, to the present. Over 650,000  questions of U.S. samples can be searched at the question-level in iPOLL, while RoperExpress offers downloads of over 20,000 datasets from over 100 countries. As part of its mission to maximize use and access for the data in its collection, the Center also provides multiple resources on politics, elections, U.S. policy, and social issues.


The Roper Center archives provide essential data for understanding U.S. politics. Resources on politics and elections are drawn from the collection’s national public opinion polls, voter exit polls at the state and national level, and other sources.

Presidential Approval

Examine presidential approval ratings from Roosevelt to Obama. Compare each president’s highest and lowest ratings throughout the course of their terms.

Presidential Approval chart

US Elections

Explore voting data, including vote by demographic group, on national and state elections, and key polling indicators of public attitudes at the time of presidential elections.

Obama vs. Romney Electoral and Popular Votes


The Roper Center collection contains public opinion data on an extremely wide range of topics. Go to Topics at a Glance for overviews of popular subject areas or browse recent Issue Briefs below.

Topics at a Glance

Topics at a Glance offers users prepared iPOLL and dataset searches, issue briefs, featured dataset descriptions, and charts and graphics on some of the most popular subject areas in polling.

Topics at a Glance tag cloud

Issue Briefs

Black, White, and Blue: Americans’ Attitudes on Race and Police

Since the events in Ferguson last summer, pollsters have exhibited a renewed interest in the relationships between race and policing ...
/ by / in Issue Briefs, police

Wages of Win: The Public and the Minimum Wage Debate

Hillary Clinton has suggested $12. Bernie Sanders favors $15. Donald Trump says he thinks a low one is good for ...

Shootings, Guns and Public Opinion

Last week the country was shocked by the on-air shooting of a reporter and cameraman – shocked, but perhaps not ...


The Roper Center archive consists of over 20,000 datasets from public opinion surveys dating back to the 1930s. By collecting and preserving the collection’s U.S. and international datasets, the Center provides opportunities for researchers to conduct detailed secondary analysis and discover new insights years after the original survey was released. Browse recent highlights from the collection below.

family planning

KAPS: Family Planning Studies

In the 1960s and 70s, the Knowledge, Attitudes, and Practices studies surveyed women and men across the world about family ...
Pew Research Center logo

Immigration: Pew’s Polls of Latinos and Asian Americans

With election season ramping up, immigration issues have been the topic of many candidate plans, statements, and debates.  But what ...

NORC: The Early Years

The National Opinion Research Center is a non-profit organization associated with the University of Chicago. NORC has been conducting polls ...

Want more on election polling data?

Explore various topics in U.S. politics ranging from 1935-present with iPOLL. Search at the question level by keyword, survey organization, date, and more.

Search iPOLL

Want more on the issues?

Explore the breadth and depth of U.S. public opinion in iPOLL, at the question level. Search over 600,000 Q&A from every major survey organization or keep exploring the Issue Briefs and Topics at a Glance.

Want more datasets?

Search our catalog of holdings by keyword, survey organization, date, and more. Looking for international data? We archive datasets from 100+ countries. Subscribe to our RSS feed for more acquisition updates.

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Become a Data Provider Today

Archiving your public opinion data at The Roper Center ensures that your data will be professionally curated, increases the impact and visibility of your work, and guarantees that your data will be easily accessible to users now and in the future.

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