Comparative Political DatasetThe Comparative Political Data Set (CPDS) is a collection of political and institutional country-level data provided by Klaus Armingeon, Sarah Engler, Lucas Leemann, and David Weisstanner at the University of Zurich (Switzerland), the Leuphana Universität (Germany), and the University of Lucerne (Switzerland). It consists of annual data for 36 democratic countries from 1960 to 2021 or since their transition to democracy.
The present data set combines and replaces the earlier versions “Comparative Political Data Set I” (data for 23 OECD countries from 1960 onwards) and the “Comparative Political Data Set III” (data for 36 OECD and/or EU member states from 1990 onwards). A variable has been added to identify former CPDS I countries.