Election data
US elections
- Harvard Election Data ArchiveData on election results, voting behavior, and electoral politics, with particular focus on the United States. The core data for the archive are state, county and district level election returns for all recent state and federal elections in the United States.
- ICPSR: US Historical Election Returns SeriesFour discrete datasets covering county- and state-level returns for all elections to the offices of president, governor, United States senator, and United States representative.
- ICPSR: US Presidential and Congressional Elections, 1840-1972County-level returns for elections to the United States presidency and to the United States House of Representatives for the years 1840 to 1972.
- ICPSR: US Candidate and Constituency Statistics, 1788-1990Derived measures including the total number of votes cast for all candidates in the election, each candidate's percentage of the vote received, and several measures of the relative performance of each candidate.
- Social Explorer This link opens in a new window
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Social Explorer includes several datasets related to US elections, including voting age population and election results.
- American National Election Studies Data CenterA joint effort of multiple high-profile academic research institutions, the ANES produced data on voting, public opinion, and political participation.
- Cooperative Election StudyFormerly the Cooperative Congressional Election Study, administered by YouGov in partnership with Harvard University.
International elections
- Statista This link opens in a new window
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Includes data on elections around the world. - Roper Center Public Opinion Archives (with iPOLL) This link opens in a new window
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US and International datasets from public opinion and other surveys.
- International Foundation for Electoral Systems Election GuideA nonprofit source for information on elections and referendums around the world.
Public opinion data
- Roper Center Public Opinion Archives (with iPOLL) This link opens in a new window
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Thousands of U.S. and international survey datasets. Sign-in to download data sets and do analyses.
- American National Election Studies Data CenterA joint effort of multiple high-profile academic research institutions, the ANES produced data on voting, public opinion, and political participation.
- GSS Data Explorer This link opens in a new window
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Data analysis tool that contains all the datasets from the GSS (General Social Survey) from 1972-present. You must create an account if you want to save variables, analyses, or visualizations.
- GallupLanding page for political related information from well known polling and research organization
- Pew Research CenterPublicly available data from the web site of one of the industry leaders in polling and public opinion research.
- Cooperative Election StudyThough primarily focused on elections, the CES includes questions on general political attitudes of respondents.
Policy data
- Comparative Agendas DatasetsCollects and organizes data from various archived sources to trace changes in the national policy agenda and public policy outcomes of the United States since the Second World War.
Federal statistical system
Coordinated by the Office of Management and Budget, the Federal statistical system is comprised of the major data and statistics collecting agencies in the government. This decentralized network has 15 major agencies and upwards of 90 smaller bodies tasked with collecting data and generating and publishing statistics and reports covering an extensive range of topics.
- Data.govOfficial portal to data produced the US federal government.