The Party Facts project is a gateway to empirical data about political parties and a modern online platform about parties and their history as recorded in social science datasets. It makes use of social media technologies to create a collaborative data infrastructure following an approach to collect data successfully applied by the Encyclopedia of Life (EOL).

Political scientists have accumulated a large amount of data on political parties. This information is included in mass surveys, data handbooks and various datasets on election results, voting records, party characteristics and party positions. With this information we can trace the dynamics of party competition across countries and time. However, the many existing datasets with crucial information about political parties are difficult to link and there is the need for a platform that helps to combine existing sources.

With Party Facts we want to establish an infrastructure that supports political scientists in linking parties across datasets. Our work is based on the experience we gained in recording and linking party information in the Manifesto project and the ParlGov project with initial data for Party Facts derived from these two projects. In the Party Facts project we link main datasets of political science and provide a platform for other scientists to add party information and additional datasets.

Further extensions may include an online (expert) survey page for each party, user specific linking options between parties and a modern data interface (REST API).


Partner projects

  • Chapel Hill Expert Survey — CHES
  • Constituency-Level Elections Archive — CLEA
  • EJPR Political Data Yearbook — EJPR PDY

Support, ideas, encouragement

  • Paul Bederke — University of Bremen — 2018—today
  • Nils Dupont — University of Bremen — 2018—today
  • Jan Fischer — University of Bremen — 2015
  • Allen Hicken — University of Michigan — 2015—today
  • Phillip Hocks — University of Bremen — 2015
  • Ken Kollman — University of Michigan — 2015
  • Kevin Deegan-Krause — Wayne State University — 2014—2016
  • Hans-Dieter Klingemann — WZB Berlin Social Science Center — 2013
  • Pola Lehmann — WZB Berlin Social Science Center — 2013—today
  • Regine Metzentin — University of Bremen — 2015
  • Philip Manow — University of Bremen — 2013—today
  • Thomas Mustillo — Purdue University — 2015—today
  • Yioryos Nardis — University of Michigan — 2015—today
  • Jonathan Polk — University of Gothenburg — 2013—today
  • Ingo Rohlfing — University of Bremen — 2015—today
  • Valentin Schröder — University of Bremen — 2013—today
  • Jan Schwalbach — University of Bremen — 2015
  • Fatemah Soleiman — University of Bremen — 2018—today
  • Paul Bederke — University of Bremen — 2018—today
  • Annika Stein — University of Konstanz — 2017
  • Nikola Todorić — University of Konstanz — 2016—2017
  • Yogesh Uppal — Youngstown State University — 2015
  • Annika Werner — WZB Berlin Social Science Center — 2013—today
  • Tomasz Żółtak — IBE Warsaw — 2014
  • Christina Zuber — University of Konstanz — 2014—2017


  • University of Bremen — M8 Plus — Aug.–Dec. 2015