About these sources
PoliData is built on public records published by parliaments, governments, election authorities and open-data projects. This page lists every outside source the product reads, what we use it for, the licence it is published under and the attribution that licence asks for.
The official records are the evidence. Summaries, classifications and other text generated with AI are our interpretation of those records and can be wrong; each item links to its official source so you can check it.
Using PoliData is covered by our Terms of Service. Reusing data you export is also subject to the licence of the source it came from.
European Union
European Parliament Open Data Portal
European Parliament
- Used for
- Legislative procedures, plenary documents and minutes, roll-call votes, MEPs and their groups, plenary speeches, amendments and the plenary calendar.
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
© European Union, 2026 – Source: European Parliament
European Parliament website and Legislative Observatory (OEIL)
European Parliament
- Used for
- Procedure files and their events, MEP declarations of meetings, adopted texts, MEP photos (credited on each MEP's page) and MEP pages linked from the product.
- Licence
- European Parliament legal notice — reuse authorised, source acknowledged
- Required attribution
© European Union, 2026 – Source: European Parliament
European election results
European Parliament
- Used for
- European Parliament election results by member state.
- Licence
- European Parliament legal notice — reuse authorised, source acknowledged
- Required attribution
© European Union, 2026 – Source: European Parliament
EUR-Lex and the Cellar
Publications Office of the European Union
- Used for
- Adopted acts and their text, procedure metadata, amending acts and national transposition measures.
- Licence
- Commission Decision 2011/833/EU (EUR-Lex metadata: CC0 1.0)
- Required attribution
© European Union, https://eur-lex.europa.eu, 1998-2026
EU Whoiswho
Publications Office of the European Union
- Used for
- Staff and posts in the EU institutions, with their history.
- Licence
- Commission Decision 2011/833/EU on the reuse of Commission documents (CC BY 4.0)
- Required attribution
EU Whoiswho, Publications Office of the European Union, © European Union, 2026
EU Transparency Register
European Parliament and European Commission (joint secretariat)
- Used for
- Registered interest representatives and their monthly snapshots on data.europa.eu.
- Licence
- Commission Decision 2011/833/EU on the reuse of Commission documents (CC BY 4.0)
- Required attribution
EU Transparency Register, © European Union, 2026
European Commission registers
European Commission
- Used for
- Commissioners' and senior staff meetings with interest representatives, the Register of Commission Expert Groups, the Comitology Register and the Register of delegated and implementing acts.
- Licence
- Commission Decision 2011/833/EU on the reuse of Commission documents (CC BY 4.0)
- Required attribution
Source: European Commission, © European Union, 2026
European Commission planning and press
European Commission
- Used for
- Have Your Say consultations, the Commission work programme, College agendas, the press corner, the register of Commission documents and the calendar of the President and Commissioners.
- Licence
- Commission Decision 2011/833/EU on the reuse of Commission documents (CC BY 4.0)
- Required attribution
Source: European Commission, © European Union, 2026
Council of the European Union
General Secretariat of the Council
- Used for
- Council meeting calendar and agendas, and Council documents such as the list of preparatory bodies.
- Licence
- Council Decision (EU) 2017/1842 on the reuse of Council documents
- Required attribution
Source: Council of the European Union, © European Union, 2026
VoteWatch Europe dataset
European University Institute, Research Data
- Used for
- Historical Council of the EU voting records by member state.
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
Hix, Frantescu, Hagemann and Noury, VoteWatch Europe dataset, EUI Research Data, 2022 (https://hdl.handle.net/1814/74918), CC BY 4.0
Parltrack
Parltrack
- Used for
- Backfilled dossier events and historical MEP meetings, stored apart from PoliData's own tables.
- Licence
- Open Database License (ODbL) 1.0
- Required attribution
Contains information from Parltrack (https://parltrack.org), which is made available under the Open Database License (ODbL) 1.0.
EU agency news feeds
EMA, EFSA, EIOPA, ESMA, EBA, ACER, ENISA and the Joint Research Centre
- Used for
- Titles, dates and links of agency consultations and publications in the EU radar.
- Licence
- Each agency's legal notice (reuse with the source acknowledged)
- Required attribution
Source: the publishing agency, named on each item
Germany
DIP — Dokumentations- und Informationssystem für Parlamentsmaterialien
Deutscher Bundestag and Bundesrat
- Used for
- Bills (Vorgänge), Drucksachen and plenary records with their text, promulgation in the Bundesgesetzblatt, and the official PDFs from the Bundestag document server, linked unaltered.
- Licence
- DIP Nutzungsbedingungen (27 February 2023)
- Required attribution
Deutscher Bundestag/Bundesrat – DIP. The data is available free of charge at dip.bundestag.de. Text shown here is extracted from the official documents.
Bundesgesetzblatt (electronic, recht.bund.de)
Bundesamt für Justiz
- Used for
- The official published text of each enacted law (from 2023, one ELI per act), shown as a document of the law.
- Licence
- Datenlizenz Deutschland – Zero – Version 2.0
- Credit (courtesy)
Bundesgesetzblatt (recht.bund.de), Datenlizenz Deutschland – Zero – Version 2.0
abgeordnetenwatch.de API v2
Parlamentwatch e.V.
- Used for
- Bundestag recorded votes (namentliche Abstimmungen) and how each member voted.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
abgeordnetenwatch.de API v2 (CC0 1.0)
Bundestag election results
Die Bundeswahlleiterin
- Used for
- Bundestag election results by constituency and Land, and the 2025 elected members.
- Licence
- Datenlizenz Deutschland – Namensnennung – Version 2.0
- Required attribution
© Die Bundeswahlleiterin, Wiesbaden 2025 · Datenlizenz Deutschland – Namensnennung – Version 2.0
Bundestag constituency map (Wahlkreiskarte)
Die Bundeswahlleiterin and Statistisches Bundesamt, on Geobasis-DE / BKG data
- Used for
- Constituency shapes on the German election map.
- Licence
- Unrestricted use with the copyright notice (download page)
- Required attribution
© Die Bundeswahlleiterin, Statistisches Bundesamt, Wiesbaden 2024, Wahlkreiskarte für die Wahl zum 21. Deutschen Bundestag. Grundlage der Geoinformationen © Geobasis-DE / BKG 2024
Netherlands
Open Data Portaal Tweede Kamer
Tweede Kamer der Staten-Generaal
- Used for
- Cases (zaken), documents, decisions and votes, activities, committees, members and their registered side jobs, with the member list on tweedekamer.nl. Not the members' portrait photos: tweedekamer.nl licenses its photos CC BY-NC 4.0 (non-commercial), so member photos come from Wikimedia Commons instead.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Bron: Tweede Kamer der Staten-Generaal (CC0)
Officiële Bekendmakingen
KOOP, on behalf of the Dutch government
- Used for
- Text of parliamentary papers (Kamerstukken) and official publications.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Bron: Officiële Bekendmakingen (CC0)
Election results (Kiesraad)
Kiesraad
- Used for
- Tweede Kamer election results by municipality and electoral district, and the municipality-to-district mapping.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Bron: Kiesraad, via data.overheid.nl (CC0)
Wikimedia Commons (member photos)
Wikimedia Commons contributors (each photo's author)
- Used for
- Photos of Tweede Kamer and Eerste Kamer members, found through the member's Wikidata item (matched on birth date and surname). Shown resized and cropped to a circle. Members without a freely licensed photo are shown with their initials.
- Licence
- Per photo: CC0, public domain, CC BY or CC BY-SA (only licences that allow commercial use)
- Required attribution
Photo: [author], [licence], via Wikimedia Commons — given with a link to the photo's Commons page on each member's page
PDOK Bestuurlijke Gebieden
Kadaster
- Used for
- Municipality shapes on the Dutch election map.
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
Gemeentegrenzen: © Kadaster / PDOK, Bestuurlijke Gebieden (CC BY 4.0)
Poland
Sejm API and ELI API
Kancelaria Sejmu
- Used for
- Prints (druki) and legislative processes with their documents, votes, MPs and clubs, committees, sittings and the published acts in Dziennik Ustaw, plus the sitting calendar on sejm.gov.pl. MPs' official photos are shown on member pages credited “Photo: Kancelaria Sejmu”.
- Licence
- Official documents (art. 4, Polish Copyright Act), reused under the Act of 11 August 2021 on open data and the reuse of public sector information
- Required attribution
Kancelaria Sejmu, api.sejm.gov.pl · opracowanie: PoliData
Senat RP (senat.gov.pl)
Kancelaria Senatu
- Used for
- Senators, their terms, clubs and districts, and their official photos (credited “Photo: Kancelaria Senatu” on member pages).
- Licence
- Official documents (art. 4, Polish Copyright Act), reused under the Act of 11 August 2021 on open data and the reuse of public sector information
- Required attribution
Kancelaria Senatu, senat.gov.pl · opracowanie: PoliData
Wikimedia Commons (member photos)
Wikimedia Commons contributors (each photo's author)
- Used for
- Fallback photos for Sejm deputies and senators whose official photo is missing (mostly earlier Sejm terms), found through the member's Wikidata item (matched on birth date and surname, or for senators on their Senate term and exact name). Shown resized and cropped to a circle. Members with neither are shown with their initials.
- Licence
- Per photo: CC0, public domain, CC BY or CC BY-SA (only licences that allow commercial use)
- Required attribution
Zdjęcie: [autor], [licencja], Wikimedia Commons — given with a link to the photo's Commons page on each member's page
Dane Wyborcze — KBW election archive (dane.gov.pl dataset 4582)
Państwowa Komisja Wyborcza / Krajowe Biuro Wyborcze
- Used for
- Sejm election results by constituency and municipality, candidates and lists, downloaded from danewyborcze.kbw.gov.pl; found and tracked through the dane.gov.pl API. PKW's own result sites are a fallback for an election KBW has not archived yet.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Źródło: Państwowa Komisja Wyborcza / Krajowe Biuro Wyborcze (danewyborcze.kbw.gov.pl, via dane.gov.pl), pobrano [data] · opracowanie: PoliData
Wykaz prac legislacyjnych i programowych Rady Ministrów (dane.gov.pl dataset 301)
Kancelaria Prezesa Rady Ministrów
- Used for
- The government's planned drafts by quarter, with the lead ministry and the EU-implementation flag, in Coming up; read from the register on gov.pl, found through the dane.gov.pl API.
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
Wykaz prac legislacyjnych i programowych Rady Ministrów, Kancelaria Prezesa Rady Ministrów (gov.pl), via dane.gov.pl · CC BY 4.0
Rządowy Proces Legislacyjny (legislacja.gov.pl)
Rządowe Centrum Legislacji
- Used for
- Each government bill's project page, read for its work-list number so a planned draft links to the bill in the Sejm.
- Licence
- Official documents (art. 4, Polish Copyright Act), reused under the Act of 11 August 2021 on open data and the reuse of public sector information
- Required attribution
Rządowe Centrum Legislacji, legislacja.gov.pl · opracowanie: PoliData
Państwowy Rejestr Granic (PRG)
Główny Urząd Geodezji i Kartografii (GUGiK)
- Used for
- Constituency shapes on the Polish election map.
- Licence
- Free of charge, for any use (Geoportal)
- Credit (courtesy)
granice: GUGiK, Państwowy Rejestr Granic
United States
Congress.gov API
Library of Congress
- Used for
- Bills, actions, sponsors and cosponsors, official summaries, amendments, committee reports, Members of Congress and CRS report links.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Congress.gov, Library of Congress
GovInfo
U.S. Government Publishing Office
- Used for
- Official bill text versions and public law text.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: GovInfo, U.S. Government Publishing Office
Office of the Clerk, U.S. House of Representatives
U.S. House of Representatives
- Used for
- House roll-call votes, House floor and committee schedules (docs.house.gov, Majority Leader) and the Clerk's election statistics for House results.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Office of the Clerk, U.S. House of Representatives
United States Senate
U.S. Senate
- Used for
- Senate roll-call votes, floor schedule and committee hearing schedules.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: United States Senate
Federal Register API
Office of the Federal Register, National Archives
- Used for
- Proposed rules and open comment periods in Coming up.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Federal Register, Office of the Federal Register
Unified Agenda of Regulatory and Deregulatory Actions
Office of Information and Regulatory Affairs (reginfo.gov)
- Used for
- Planned federal rulemakings in Coming up.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Unified Agenda, reginfo.gov
OpenFEC API
Federal Election Commission
- Used for
- Campaign finance totals, aggregated donor breakdowns (by employer, occupation, size and state) and outside spending for members of Congress.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Federal Election Commission
Lobbying Disclosure Act filings (LDA.gov)
Secretary of the Senate and Clerk of the House
- Used for
- Lobbying registrations and quarterly reports, clients, issues and bills lobbied on.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: Lobbying Disclosure Act filings, LDA.gov
Cartographic boundary files
U.S. Census Bureau
- Used for
- Congressional district shapes on election maps.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Source: U.S. Census Bureau, cartographic boundary files
congress-legislators
The @unitedstates project
- Used for
- Matching members of Congress to their FEC candidate IDs.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Source: unitedstates/congress-legislators (CC0)
United Kingdom
UK Parliament data APIs
Houses of Parliament
- Used for
- Bills and their publications (Bills API), Members and their party history, government posts and Lords interests (Members API), Commons and Lords divisions, Hansard, written questions and statements, early day motions, committees and their events, the Register of Members' Financial Interests, the parliamentlive.tv guide and general election results.
- Licence
- Open Parliament Licence v3.0
- Required attribution
Contains Parliamentary information licensed under the Open Parliament Licence v3.0.
legislation.gov.uk
The National Archives
- Used for
- The text of UK Acts as enacted, shown as a bill's final version and compared with its last print.
- Licence
- Open Government Licence v3.0
- Required attribution
Source: legislation.gov.uk. Contains public sector information licensed under the Open Government Licence v3.0.
Internet Archive Wayback Machine
Internet Archive
- Used for
- Archived copies of House of Commons bill prints when publications.parliament.uk refuses our request, shown as “Archived copy (Wayback Machine, date)”.
- Licence
- Open Parliament Licence v3.0
- Required attribution
Archived copy (Internet Archive Wayback Machine). Contains Parliamentary information licensed under the Open Parliament Licence v3.0.
GOV.UK Content and Search APIs
Government Digital Service and UK government departments
- Used for
- Ministerial meetings with external organisations (departmental transparency returns), open consultations in Coming up and fiscal event dates.
- Licence
- Open Government Licence v3.0
- Required attribution
Contains public sector information licensed under the Open Government Licence v3.0.
Open Geography Portal — Westminster constituencies (July 2024)
Office for National Statistics
- Used for
- Constituency shapes on the UK election map.
- Licence
- Open Government Licence v3.0
- Required attribution
Source: Office for National Statistics licensed under the Open Government Licence v.3.0 · Contains OS data © Crown copyright and database right 2024
Across jurisdictions
Wikidata
Wikimedia Foundation and Wikidata contributors
- Used for
- Party identifiers, colours, short names, founding dates, ideology and leaders, and the items that link Dutch members to their Wikimedia Commons photos.
- Licence
- CC0 1.0 Universal (public domain dedication)
- Credit (courtesy)
Party data from Wikidata (CC0)
DB-IP IP to City Lite
DB-IP
- Used for
- Approximate city and country of sign-ins on Account → Sign-in & security, looked up on our own servers.
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
IP Geolocation by DB-IP
Images and graphics
UK Parliament member portraits
UK Parliament
- Used for
- Portraits of MPs and members of the House of Lords, from the Members API.
- Licence
- Creative Commons Attribution 3.0 (CC BY 3.0)
- Required attribution
© UK Parliament, licensed under CC BY 3.0
European Parliament MEP photos
European Parliament
- Used for
- Photos of Members of the European Parliament, each linked to the MEP's page on europarl.europa.eu.
- Licence
- European Parliament legal notice — reuse authorised, source acknowledged
- Required attribution
© European Union, 2026 – Source: European Parliament
U.S. member photos
Congress.gov / U.S. Government Publishing Office
- Used for
- Photos of members of the House and Senate, from the Congress.gov member API.
- Licence
- Public domain — work of the U.S. Government (17 U.S.C. § 105)
- Credit (courtesy)
Congress.gov / U.S. Government Publishing Office
Twemoji flags (Twemoji Country Flags webfont)
Twitter, Inc. and other contributors
- Used for
- Flag emoji on browsers that cannot draw flags themselves (Chrome and Edge on Windows, most Linux browsers).
- Licence
- Creative Commons Attribution 4.0 (CC BY 4.0)
- Required attribution
© Twitter, Inc. and other contributors, CC BY 4.0; subset via country-flag-emoji-polyfill (MIT)
Report a missing credit
If a source is missing here, a credit is wrong, or you publish data we use and want it attributed differently, write to support@getpolidata.com. We correct credits as soon as we can confirm them.