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NameFieldLinkDescription
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#Election2020 Twitter DatasetAP
https://github.com/echen102/us-pres-elections-2020
"Twitter dataset on the 2020 US Presidential election"
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Additonal Congressional Data SourcesAPhttps://web.mit.edu/17.251/www/data_page.html
"The purpose of this page is to begin accumulating hyperlinks in one place to various sites around the country that house data relevant to studies of Congress, legislatures in general, and all the rest. "
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AfrobarometerCPhttps://afrobarometer.orgPublic opinion data from Africa
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ALEC (American Legislative Exchange Council) Model PoliciesAP https://alec.org/model-policy/ALEC is a (conservative) interest group that creates model policies to disseminate through the US state legislatures. This cite lists their model policies.
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Alliance Treaty Obligations and Provisions (ATOP) IR
http://www.atopdata.org/?fbclid=IwAR1jy79ap8gnsbU-e96hXNn3YpQBEfqftF_rNn2MsPHmNmWw35JZq1QQdvI
Content of military alliance agreements for all countries between 1815 and 2018
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American Geosciences InstituteDataverse
 http://www.agiweb.org/pubs/globalgis/datasets.html
Global GIS data
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American local government elections databaseAP
https://www.hks.harvard.edu/publications/american-local-government-elections-database-0
"Database on 78k candidates in 57k elections in seven distinct local political offices in most medium and large cities and counties in the U.S. over the last three decades"
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American Municipal Officials Survey (AMOS) APhttps://www.municipalsurvey.org/"Survey of elected municipal officials"
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American National Election Study (ANES) APhttps://electionstudies.org/US opinion and participation
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Arab Barometer CP
https://www.arabbarometer.org/survey-data/data-downloads/
Public opinion data in the Arab world
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Armed Conflict Location & Event Data Project (ACLED)IRhttps://acleddata.com/about-acled/Global data on actors, locations, fatalities, and political violence/protests; coverage includes mostly recent years (2016-present), with some back to 1997 
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BBC Sound EffectsMisc https://sound-effects.bbcrewind.co.ukBBC's library of sound effects
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CHORUS: A New Dataset of State Interest Group Policy Positions in the United States
AP
https://dataverse.unc.edu/dataset.xhtml?persistentId=doi:10.15139/S3/RPU1QP
CHORUS: A New Dataset of State Interest Group Policy Positions in the United States
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Collaborative Multiracial Post-Election Study (CMPS) APhttps://cmpsurvey.org/​Data on racial and ethnic Americans, includes an oversample of non-white Americans
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Colonial Dates Dataset CP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/T9SDEW
Data on European colonial empires
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Comparative Study of Electoral Studies (CSES) CPhttps://cses.org/International electoral features (e.g. term lengths, executive system type)
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CongressData APhttps://cspp.ippsr.msu.edu/congress/Data on the US Congressional districts and policy making
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Congressional Committee DatasetsAP
1st-79th Congress: https://web.mit.edu/17.251/www/data_page.html#1 80th-102nd Congress: https://web.mit.edu/17.251/www/data_page.html#0 103rd-114th Congress: https://web.mit.edu/17.251/www/data_page.html#2
"Records membership on all congressional committees for the periods covered in the study"
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Congressional Oversight Records Database (CORD)APcord-levin-center.org "congressional oversight reports from the 106th Congress to the present day"
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Constituency-Level Elections ArchiveCPhttps://electiondataarchive.org/"Repository of detailed election results at the constituency level for lower chamber and upper chamber legislative elections from around the world."
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Cooperative Congressional Election Studies (CCES) APhttps://cces.gov.harvard.edu/US and state Opinion and participation
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Correct Voting MeasuresAP
https://www.openicpsr.org/openicpsr/project/209844/version/V1/view
Includes measures of 'correct voting' derived from the ANES from 1972-2020
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Correlates of State Policy AP
http://ippsr.msu.edu/public-policy/correlates-state-policy
US state characteristics (e.g. term limits, policy diffusion, legislative professionalism, policy and citizen liberalism)
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Correlates of War (COW) IRhttps://correlatesofwar.org/data-setsInternational wars, MIDs, military capabilities, etc
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Council of European Social Science Data Archives (CESSDA)Dataversehttps://www.cessda.eu/Metadata on surveys from Eurpoean countries
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COVID States ProjectAPhttps://www.covidstates.org/50-state public opinion survey related to COVID issues (e.g., vaccinations)
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Database on Ideology, Money in Politics, and Elections (DIME)AP https://data.stanford.edu/dime Database on political contributions and ideological mappings of political elites, interest groups, and political donors
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Democracy Fund + UCLA Nationscape ProjectAP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/CQFP3Z
Weekly public opinion surveys (total N~500,000) from July 2019 and January 2021
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Democratic Erosion Event Dataset (DEED) CP
https://www.democratic-erosion.com/event-dataset/
"Capturing events related to democratic erosion and autocratic consolidation across over 100 countries since 2000"
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Digitally Accountable Public Representation (DAPR)AP
https://dataverse.harvard.edu/citation?persistentId=doi:10.7910/DVN/A9EPYJ
"online communication of 28,834 federal, state, and local elected officials"
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Distribution of Military Capabilities (rDMC) DatasetIRhttps://www.militarycapabilities.com/Dataset on distribution of military capabilities across countries and time
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Disucssion, Voting, and Opinion Assignment Procedures of US State Courts of Last Resort
APhttps://davidhughesphd.com/data/"[D]ataset containing the discussion, voting, and opinion assignment procedures used at each of the 52 state courts of last resort."
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Dynamic Process Tracing MethodologyOtherhttps://udel.edu/~redlawsk/dpte/overview.html
"The Dynamic Process Tracing Environment (DPTE) is a web-based system that allows any researcher interested in examining decision making over time to make use of the Dynamic Process Tracing methodology."
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Election Administration and Voting Survey (EAVS) AP
https://www.eac.gov/research-and-data/studies-and-reports
US state and county election information (e.g. number of votes cast, number of polling places, ballot machine types)
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Electoral Legislation by Country CP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/TIH5FK
Data on election-related legislation across 165 countries
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Electoral Management Survey CP
https://www.electoralintegrityproject.com/electoralmanagementsurvey
Survey of electoral authorities on how elections are run in their country  
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Ethnic Power Relations DatasetCP  https://icr.ethz.ch/data/epr/Comparative data on ethnic power relations
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European Barometer CPhttps://europa.eu/eurobarometer/screen/homePublic opinion data in the European Union
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European Mass IdeologyCP http://www.chriswarshaw.com/data.phpMass liberalism of European countries (1981-2016)
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European Social Survey (ESS)CPhttps://www.europeansocialsurvey.org/European Opinion (and Participation?)
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Executive Approval Database CPhttp://www.executiveapproval.org/Cross-national data on support for political executives
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Follow the MoneyAPhttps://www.followthemoney.org/Data on contributions and expenditrures for local elections, state elections, federal elections, and lobbysits information
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Freedom House (FH)CPhttps://freedomhouse.org/International measures of democracy-authoritarianism
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General Social Survey (GSS) APhttps://gss.norc.org/US (and state?) public opinion
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Global Dataset on TurnoutCP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/NYXHU9
Dataset on over 3000 eletions in 190 countries from 1945
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Global Sanctions DatabaseIRhttps://www.globalsanctionsdatabase.com/Datasets of sanctions
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Google Dataset Search
Dataset of Datasets
https://datasetsearch.research.google.com/Google's Dataset Search engine, includes political science and non-political science datasets
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Harvard Dataverse Dataversehttps://dataverse.harvard.edu/Repository for data and replication files
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Herfindahl-Hirschman Index CalculatorCalculatorhttps://www.omnicalculator.com/finance/hhiCalcualtes Herfindahl-Hirschman Index, typically used to measure market concentration but adapted for other uses (e.g., race, party)
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Historical Conflict Event Dataset (HCED)IR
 https://journals.sagepub.com/doi/pdf/10.1177/00220027221119085
Global data on location, participants, and outcomes for military encounters from 1468BC to 2003
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ICPSR Dataverse Dataverse
icpsr.umich.edu/web/pages/peersdatahub/discover-dad.html
Repository for data and replication files
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ICPSR Resource Center for Minority DataAP
https://www.icpsr.umich.edu/web/pages/RCMD/index.html
A repository of data on minorities in the United States
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Integrated Postsecondary Education Data SystemAP
https://nces.ed.gov/ipeds/?fbclid=IwAR1PrR98CMwilJ8BGx4RzcFS1dFFzidu5wkfOSvEohJ_y8rkeefyMFxCG6w
Information on US colleges, universities, and technical and vocational institutions
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Integrated Public Use Microdata Set (IPUMS)CPhttps://ipums.org/US (and state) and International data (health, participation, economy, time use, etc.)
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International City/County Management Association DataAPhttps://icma.org/survey-research-datasetsDatasets on local and county management
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Issue Correlates of War (ICOW) IR
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/E6PSGZ
International territorial issues (e.g. disputes, reconciliations)
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Journal of Peace Research Replication Data Dataversehttps://www.prio.org/journals/jpr/replicationdataDataverse for replication data for studies published in Journal of Peace Research
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Klarner Politics Publicly Available Datasets APhttps://www.klarnerpolitics.org/datasets-1​
Includes data used in Dr. Carl Klarner's research, including historical and contemporary state legislative election returns, lists of governors, state competitiveness, and state partisan balance
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Latin American Public Opinion ProjectCPhttps://www.vanderbilt.edu/lapop/Public opinion data in the Americas
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Latino Baromoter CPhttps://www.latinobarometro.org/latContents.jspPublic opinion data from Latin America
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Latino Immigrant National Election StudyAP
https://www.icpsr.umich.edu/web/RCMD/studies/38129
Data on Latino immigrant opinions and participation
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Legislative Effectiveness APhttps://thelawmakers.org/data-downloadUS (federal) legislator effectiveness 
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Legislator Diversity APhttps://www.legislatordiversity.com/State legislator gender, race, ethnicity, and party
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LocalViewAPhttps://localview.net/"database of local government public meetings"
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Malaysian Election ResultsCP
https://github.com/TindakMalaysia/HISTORICAL-ELECTION-RESULTS
Historcial election data from Malaysisa (see also https://github.com/TindakMalaysia/GE15-Dataset)
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Measuring the Political Salience of Supreme Court CasesAP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/29637
Dataset measuring political salience of SCOTUS decisions
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Minorities at RiskCPhttp://www.mar.umd.edu/mar_data.aspData on politically active ethnic groups fro 1945 to the present
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National Asian American SurveyAPhttp://naasurvey.com/Survey on opinions and pariticipation of Asian Americans and Pacific Islanders
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National Registry of Exonerations AP
https://www.law.umich.edu/special/exoneration/Pages/about.aspx
Data on exonerations in the United States
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National Survey of Black AmericansAP
https://www.icpsr.umich.edu/web/NACDA/series/164
Data on Black Americans from 1979-1992
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ParlQuestionTime CP
https://dataverse.harvard.edu/dataverse/ParlQuestionTime
Data on speech contributions, issue attention, and participation for a handful of parliaments
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Parties, Institutions, and Preferences (PIP) CP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/KRXPH4
Comparative data on parties, institutions, and preferences
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Parties' Group Appeals Dataset CP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/NZQGST
Data on parties' group appeals in Iraq and Netherlands 1977-2015
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Party Adjusted Surrogate Judge Ideology ScoresAPhttps://davidhughesphd.com/data/Idelogy scores for US State Supreme Court Justices
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Peace Accords Matrix IRhttps://peaceaccords.nd.edu/Data on implementation of intrastate peace agreements
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Perceptions of Electoral Integrity CPhttps://www.electoralintegrityproject.com/peiData on how well countries elections meet international election integrity standards 
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PlanScoreAPhttps://planscore.org/Scores US state redistricting maps on how fair or gerrymandered they are
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PolData
Dataset of Datasets
https://github.com/erikgahner/PolDataA much more expansive collection of political datasets
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Policy Mood, Macropartisanship, and MacroideologyAPhttps://stimson.web.unc.edu/data/Data on national policy mood, macroparisanship, and macro ideology
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Polity ProjectCP
 https://www.systemicpeace.org/polityproject.html
International measures of democracy-authoritarianism, including additional information such as forced population displacements and coups
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Populist CPhttps://popu-list.org/about/ List of European parties classified as populist, far left, and/or far right
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Protected Areas DatabaseAP
https://www.usgs.gov/programs/gap-analysis-project/science/pad-us-data-download
national inventory of U.S. terrestrial and marine protected areas
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Roper Center for Public Opinion ResearchAPhttps://ropercenter.cornell.edu/US public opinion data on various topics and timespans
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State and Local Level Estimates of Mass Ideology and Policy Liberalism (Caughey and Warshaw's measures) 
APhttp://www.chriswarshaw.com/data.phpIncludes data on ideology and/or policy liberalism at state (1936-2020) and local (2000-2022) geographies in the United States.
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State CapacityAP
https://dataverse.unc.edu/citation?persistentId=doi:10.15139/S3/PB5UMO
Measure of state capacity
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State Level Estimates of Felon Disenfranchisement  AP
https://www.ojp.gov/ncjrs/virtual-library/abstracts/state-level-estimates-felon-disenfranchisement-united-states-2010
Felon disenfranchisement at the US state level in 2010
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State Policy Innovation and Diffusion Database (SPID) APhttps://dataverse.harvard.edu/dataverse/spidUS state policy information, diffusion and adoption
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Subnational Corruption DatabaseCPhttps://globaldatalab.org/governance/Subnational international data on corruption
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Survey of the Performance of American Elections (SPAE) APhttps://dataverse.harvard.edu/dataverse/SPAEUS and state opinion of elections (e.g., good or bad experience when voting)
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TrueViewsAPhttps://trueviews.org/"TrueViews displays estimates of public opinion on many issues and at numerous geographic levels."
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Twitter History and Image SharingCP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/14WGUG
Twitter data
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U.S. Partisanship and Presidential Approval DatasetAP
https://ropercenter.cornell.edu/ipoll/study?doi=10.25940/ROPER-31120311
US Partisanship and presidential Approval (1948-2020)
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United Nations General Assembly Voting Data  IR
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/LEJUQZ
Dataset of roll-call votes in the UN General Assembly
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Uppsala Conflict Data Program IRhttps://ucdp.uu.se/Data on organized violence and civil war
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US Census Bureau (US Census) APhttps://data.census.gov/cedsci/Data on US populations (race, age, gender, income, education, etc.) at different geographic levels
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US County Elections DatasetAP
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/DGUMFI
Dataset of county-level election returns for presidential, U.S. Senate, and gubernatorial elections from 1872-2020
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US Elections Project APhttp://www.electproject.org/Precinct, state, and national level election returns, including early voting
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US Federalm Court Institutional WellbeingAPhttps://davidhughesphd.com/data/"Estimates for the institutional well-being of the U.S. federal courts"
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US Press Freedom Tracker APhttps://pressfreedomtracker.us/all-incidents/Data on arrests, equipment seizures, assaults, etc. on US journalists