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The Afrobarometer is an independent, nonpartisan research project that measures the social, political, and economic atmosphere in Africa. Afrobarometer surveys are conducted in more that a dozen African countries and are repeated on a regular cycle. Because the instrument asks a standard set of questions, countries can be systematically compared. Trends in public attitudes are tracked over time.

American National Election Studies

American National Election Studies produces high quality data on voting, public opinion, and political participation to serve the research needs of social scientists, teachers, students, policy makers and journalists who want to better understand the theoretical and empirical foundations of national election outcomes. American National Election Studies is a collaboration of Stanford University and the University of Michigan, with funding by the National Science Foundation.


AmericasBarometer is a multi-country, regularly conducted survey of democratic values and behaviors in the Americas. Survey topics include citizen views on system support, political tolerance, citizen participation, local government, corruption, and views on authoritarianism for the Americas. (Harvard University ID and PIN required.)

Arab Barometer

The Arab Barometer, in partnership with the Arab Reform Initiative, produces scientifically reliable data on the politically-relevant attitudes of ordinary citizens, disseminates survey findings in order to contribute to political reform, and seeks to strengthen institutional capacity for public opinion research.

California Statewide Database

The California Statewide Database (SWDB) is the redistricting database for the state of California.  It collects, processes and updates data for California state legislative and local redistricting. SWDB also collects redistricting literature and copies of cases that relate to redistricting and the census enumeration.

Census Bureau Voting and Registration

The U.S. Census Bureau provides detailed information on reported voting and registration by various demographic and socioeconomic characteristics. The information is collected in November of congressional and presidential election years in the Current Population Survey (CPS).

Comparative Study of Electoral Systems

The Comparative Study of Electoral Systems (CSES) is a collaborative program of research among election study teams from around the world. Participating countries include a common module of survey questions in their post-election studies. The resulting data are deposited along with voting, demographic, district and macro variables. The studies are then merged into a single, free, public dataset for use in comparative study and cross-level analysis.

CQ Voting and Elections Collection

The CQ Voting and Elections Collection provides historical data on elections (presidential, congressional and gubernatorial), campaign finances, voter demographics, voter turnout, political parties. CQ Voting and Elections Collection includes analyses of elections and political parties, maps and district profiles and may be both searched and browsed. An encyclopedia provides explanations of over 200 campaign and election topics. A citation is produced for each data table created. Data can be saved, printed, emailed and exported. Coverage from 1789 to the present. The Maps section requires the SVG viewer plugin and Internet Explorer. (Harvard University ID and PIN required.)

Election Assistance Commission Research and Data

U.S. Election Assistance Commission (EAC) Research and Data provides access to completed research and reports commissioned by the EAC, information about EAC research in progress, and additional elections research issued by other organizations.


Eurobarometer provides access to surveys, qualitative studies and archives of the Public Opinion Analysis sector of the European Commission. The European Commission monitors the evolution of public opinion in its Member States in order to assist in the preparation of texts, decision-making and the evaluation of its work. Eurobarometer surveys and studies address major topics concerning European citizenship: enlargement, social situation, health, culture, information technology, environment, the Euro, defense, etc.

FEC Campaign Finance Reports & Data

The Federal Election Commission (FEC), an independent regulatory agency created by Congress in 1975, administers and enforces the Federal Election Campaign Act (FECA) which governs the financing of federal elections. The Campaign Finance Disclosure Portal offers one point of entry to campaign finance data.

Gallup Brain

Gallup Brain provides access to the records of public opinion polling data and analyses compiled by Gallup, Inc. from 1935 to the present. (Harvard University ID and PIN required.)

Globalbarometer Surveys

The Globalbarometer Surveys (GBS) is the first comprehensive effort to measure, at a mass level, the current social, political, and economic atmosphere around the world. It provides an independent, non-partisan, multidisciplinary view of public opinion on a range of policy-relevant issues.


The Latinobarometer is an annual survey conducted in 18 Latin American countries. The survey measures public opinions, attitudes and behaviors on topics such as economics, culture and politics.  (Harvard University ID and PIN required.)

Lijphart Elections Archive

The Lijphart Elections Archive, housed at the University of California, San Diego, is a research collection of district level election results for approximately 350 national legislative elections in 26 countries. The objective of the Archive is to systematically collect election statistics in as much detail as possible, including, as a minimum, the results at the level of the individual election districts in which votes are converted into seats. The Archive originally acquired print copies of the data and is now focusing on online data. The catalog of holdings details archive holdings of both print and online data as well as access to data when it can be freely disseminated. In addition, the catalog links to other sources of online election data and information.

Mayoral Election Center

The Mayoral Election Center, produced by the U.S. Conference of Mayors, provides a database of mayoral election results.

National Conference of State Legislatures Elections & Campaigns

The National Conference of State Legislatures’ (NCSL) Elections & Campaigns portal tracks state level election and campaign issues.  The site provides access to state voter information, comprehensive research, and analysis on a wide variety of election and campaign issues for all state legislatures.

Pew Research Center

The Pew Research Center, a nonpartisan fact tank, provides information on the issues, attitudes and trends shaping America and the world. The Pew Research Center conducts public opinion polls and performs social science research. The Pew Research Center Databank provides access to Pew Research Center datasets.

Political Handbook of the World

Political Handbook of the World provides information on the major aspects of each country’s government and political party system. In addition, Political Handbook of the World profiles more than 38 non-UN intergovernmental organizations, such as OPEC, NATO, the WTO, regional banks, and the agencies and specialized bodies of the United Nations. (Harvard University ID and PIN required.)

Polling the Nations

Polling the Nations is a comprehensive compilation of public opinion surveys, containing the full text of more than 350,000 questions and responses from 14,000 surveys conducted by 700 polling organizations from 1986 to the present in the United States and more than 80 other countries. Each record provides a question asked and the responses given. Also included is the polling organization responsible for the poll, the sample size and the date the poll was released. (Harvard University ID and PIN required.)

Proquest Statistical Insight

Proquest Statistical Insight provides indexes and abstracts of the statistical content of selected publications of U.S. federal and state agencies, non-governmental associations, commercial publishers, universities, and international, research and business organizations. (Harvard University ID and PIN required.)

Roper Center for Public Opinion Research

The Roper Center for Public Opinion Research is the leading educational facility and archive in the field of public opinion. The Roper Center promotes the intelligent, responsible and imaginative use of public opinion and fosters increased international understanding through cross-national research. The Roper Center maintains the world’s largest archive of survey data and strives to improve the practice of survey research and the use of survey data. The Roper Center preserves the data from polls conducted by many leading survey research organizations for the use of researchers, students, and journalists. Several thousand polls taken in some 70 foreign countries are also housed in the Roper Center archives. See its iPoll search to search  over 650,000 public opinion survey questions and its  Dataset Search  to search over  12,000 US and 8,000 international dataset abstracts. (Harvard University ID and PIN required.)

SDA: Survey Documentation & Analysis

SDA: Survey Documentation & Analysis is a set of programs for Survey Documentation and Analysis. The SDA Archive includes several datasets, including the General Social Survey (GSS) and the American National Election Study (ANES). SDA programs can produce codebooks either for printing or for browsing. The documentation for each study contains a full description of each variable, indexes to the variables, and whatever study-level information is available.

Statesman’s Yearbook

The Statesman’s Yearbook provides a concise guide to world politics, economics and international relations, including details on population, officials, exports, constitutions, governments, diplomatic representatives, religion, finance, and basic histories of nations and states, as well as international and non-governmental organizations and think tanks. (Harvard University ID and PIN required.)

Sunlight Foundation

Sunlight Foundation is at national, nonpartisan, nonprofit organization  maintains a variety of tools and projects focused on government accountability and transparency.  Tools include Influence Explorer (federal campaign finance, lobbying and foreign influence data) and Capitol Words (exploring the most popular words and phrases used by legislators in the Congress).


The Transactional Records Access  Clearinghouse (TRAC) is a data gathering, data research and data distribution organization associated with Syracuse University. TRAC’s purpose is to provide with comprehensive information about federal staffing, spending, and the enforcement activities of the federal government. TRACfed provides a wide range of information about federal enforcement activities as well as detailed information about federal staffing, federal funds, and the diverse characteristics of counties, federal districts, and states. TRACfed data is organized into several modules including: Criminal Enforcement, Civil Enforcement, Administrative Enforcement, People & staffing, Money (Federal Funds), and Community Context.  Creating and saving data to a “web locker” permits creation of data slices. Users may also get information about particular statutes with its About the Law tool. Access is controlled by HLS IP-address and is limited to the Harvard Law School community. Off-campus access is controlled by HLS Me Account username and password

U.S. Clerk of the House Election Information

The Clerk of the House provides access to Election Information including election results and official vote counts (1920 to current) for federal elections.

U.S. Congress Votes Database

The U.S. Congress Votes Database, produced by the Washington Post, provides data about every vote in the United States Congress since the 102nd Congress (1991).

U.S. Electoral College Election Results

U.S. Electoral College Election Results provides access to historical election results including electoral votes, popular votes, electors, and certificates of past presidential elections.

World Factbook

The World Factbook, produced by the U.S. Central Intelligence Agency, provides information on the government, economy, geography and history of more than 267 countries and other world entities.

World Values Survey

The World Values Survey has conducted five waves of surveys in 87 countries since 1981. An integrated data file of all waves can be downloaded here. Note that SPSS, SAS or STATA are required to view the data. The online data analysis tool allows for simple summary statistical inquiries without having to download the data.