Our data on populist parties in European Parliament elections (PPEPE), from our article in the Electoral Studies, is now linked to the Party Facts. You can find it here.
Party Facts, for people not already familiar with this amazing resource, links several datasets on political parties to make it easier for researchers to work with such data. At the time of writing, Party Facts cover 5765 core parties from 224 countries.
This means that it is now possible to link our data to several other high-quality political datasets such as ParlGov, V-Party, CHES, etc. You can find an example in R showing how you can easily link our PPEPE data to ParlGov, the Manifesto Project and CHES here.