- American National Election Studies 1948-
Survey of voting behavior in the United States, conducted biennially since 1956. Basic questions on religious identification and attendance at religious services have been asked throughout the time series, but the religion module was widened starting in 1990. Contains links to download all the data.
- American Public Opinion and US Foreign Policy Series
This series of quadrennial studies was designed to investigate the opinions and attitudes of the general public and a select group of opinion leaders on matters relating to United States foreign policy and to define the parameters of public opinion within which decision-makers must operate. Data covers 1975-2004.
- British General Election Studies
Rrepresentative probability sample surveys in the country designed to explore the changing determinants of electoral behavior in contemporary Britain. The link above is to the surveys from 1969 through 1997. ICPSR also holds the earlier surveys starting in 1963.
- Canadian National Election Study Series
Canadian National Election Surveys for 1965, 1968, 1972, 1974, 1984, 1988, 1993, 1997, 2000. Also includes the 1974-1979-1980 Quebec Referendum Panel Study and the 1992 Referendum Survey on the Charlottetown Accord.
- Comparative Study of Electoral Systems
The Comparative Study of Electoral Systems (CSES) is a collaborative program of cross-national research among election studies conducted in over fifty states.
- Federal Election Commission
Detailed data on campaign contributions and expenditures by candidates, parties, and committees.
- German Election Studies
In federal election years, the German Politbarometer is considered part of the German Election Study. However, in some election years when funding is not awarded, election studies are not carried out. 1969+
- National Black Election Studies
The purpose of this data series was to provide large-scale scientific surveys and make possible in-depth investigation of the political attitudes, perceptions, and electoral behaviors of a large, representative national sample of adult Black Americans. The studies permit analyses and change in the Black community on a scale that had not been possible before the series began.
- Roper iPoll Elections
An archive of exit polls, presidential results (1976-present) and congressional results (1994-present).
- United States Historical Election Returns
ICPSR's holdings of historical election returns data cover the years 1788-1990 and consist of several discrete datasets that contain county- and state-level returns for all elections to the offices of president, governor, United States senator, and United States representative.