Political Science

The American National Election Studies (ANES) 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. NOTE: ANES is not a source of factual population data on registration, eligibility, turnout, or vote.

Established in 1999 at the University of California- Santa Barbara, this repository provides nearly 100,000 current and historical executive branch documents on American Presidents from 1789 to 2008. Site also includes election data and statistics from 1789 to current.

The Roper Center has made available its entire collection of Primary exit polls. Primary exit polls datasets include standard demographic makeup of interviewee and questions pertinent to the issues of each state.

The official government source for information on the U.S. Electoral College, the process through which the people of the United States vote for the electors who then vote for the President. Website provides detailed information on what the electoral college is and provides statistics and data on electoral votes, popular votes, electors, and certificates of past presidential elections.

Provides statistics for official vote counts for federal elections from 1920 to the present from the official sources among the various states and territories. The original documents are available in scanned PDF format for historical data. Also available is the latest official list of nominees for the Office of United States Senator and for the Office of United States Representative, and the latest statistics of the Presidential and Congressional Elections of November.

Provides data and analysis of women's voting including listing of percentages of men and women voting in presidential and non-presidential years from 1964 through 2016 and voter registration numbers from 1984 through 2016. Also includes a break down of differences between men and women voting by racial category (1984 - 2016) and age (1996 and 2016). Also provides polling data from 2012 on differences between men and women on selected policy issues.

The U.S. Census Bureau through the Current Population Survey collects data on reported voter registration and voter turnout. The reports provide statistical data by turnout, age, race and origin.

The "Comparative Political Data Set" (CPDS) is a collection of political and institutional country-level data provided by Prof. Dr. Klaus Armingeon and collaborators at the University of Berne. It consists of annual data for 36 democratic countries for the period of 1960 to 2014 or since their transition to democracy.

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 public dataset for use in comparative study and cross-level analysis.

The Constituency-Level Elections Archive (CLEA) is a repository of detailed election results at the constituency level for lower house legislative elections from around the world. Our motivation is to preserve and consolidate these valuable data in one comprehensive and reliable resource that is ready for analysis and publicly available at no cost. This public good is expected to be of use to a range of audiences for research, education, and policy-making.

The Database of Political Institutions presents institutional and electoral results data such as measures of checks and balances, tenure and stability of the government, identification of party affiliation and ideology, and fragmentation of opposition and government parties in the legislature, among others. The current version of the database, which is now hosted at the IDB, expands its coverage to about 180 countries for 40 years, 1975-2017. Researchers at the World Bank Development Research Group first compiled the database in 2000 (see citation information below). It has become one of the most cited databases in comparative political economy and comparative political institutions. Almost 3,000 studies have used this database so far as a source of institutional and political data in their empirical analysis.

Dataset produced by Matt Golder (Pennsylvania State University) and Nils-Christian Bormann (University of Exeter) of legislative and presidential elections that took place in democratic states from 2001 through 2011. In addition to significantly expanding the size of the original DES dataset, the authors offer a simplified classification scheme for electoral systems. Detailed information is provided about all democratic elections since 1946, including the dates for each round of elections as well as the rules used in different electoral tiers. A brief temporal and geographic overview of the data is presented.

The European Election Database is specifically intended to provide election results on a regional level for European countries. As of November 2010, the database contains more than 300 datasets, covering most national elections held in 31 European countries since 1990. Datasets are available for the following categories: (1) Parliamentary (legislative) elections; (2) European Parliament elections; (3) Presidential elections; (4) Referendums related to the European Union; (5) and Combined country files for all parliamentary elections and European parliamentary elections held since the 1990s (available for selected countries).

The Global Elections Database (formerly known as the Constituency-Level Elections Dataset, 2007) provides information on the results of both national and subnational elections around the world. These data are presented at two levels of analysis, allowing users to quickly identify the results of elections within a country as a whole or within particular constituencies or districts of a country. All parties are included in the database regardless of the number of votes that they won. The data are based on countries' official election results and have been amassed from various government institutions. The Constituency-Level Elections Dataset was compiled by Dawn Brancati as part of her dissertation research.

The International Institute for Democracy and Electoral Assistance (International IDEA) is an intergovernmental organisation that was founded by 14 member states in 1995. The database contains regularly updated Voter Turnout figures for national presidential and parliamentary elections since 1945, as well as European Parliament elections (including Voting from Abroad). In addition it contains data on Direct Democracy, Electoral Justice, Electoral System Design and Gender Quotas.

Through its website the PDBA offers centralized and systematized information about institutions and political processes, national constitutions, branches of government, elections, political constitutional studies and other subjects related to the strengthening of democracy in the Americas. The full text of constitutions, election results, and rosters of political leaders (past and present) are available here.