Contribute to the CLD

The Comparative Legislators Database (CLD) is a team effort comprised of volunteer developers from multiple academic institutions. If you would like to contribute to the database by adding a new legislature, or adding data for a new legislative term, you can follow the instructions in this tutorial.

Contributors (in order of joining)


Sascha Göbel

Goethe University Frankfurt am Main


Simon Munzert

Hertie School


Sebastian Ramirez-Ruiz

Hertie School

Integrating your database with the CLD

The CLD is a relational database. The joins in the database are based on two keys - the Wikipedia page ID or the Wikidata ID of the individual legislators. If your database contains either key, you can easily integrate with the CLD.

Let us know about your data that you think should be integrated with the CLD by sending a message to