Data

Citizen Anger Interwar News (CAIN) Data
The Citizen Anger Interwar News (CAIN) Data covers political violence events reports from ten European interwar democracies. It records their location, timing, the number of casualties, and actors involved. The interactive map allows you to explore the data.

Democratic Electoral Systems
Information on electoral rules in 1,826 legislative elections and 648 presidential elections in democracies since 1919. The dataset spans two time periods covered in separate data publications: the interwar period (1919–1945) and the postwar period (1946–2020).

Archive of Interwar Europe Election Data & Assemblies (AIEEDA)
A multi-level dataset of parliamentary elections in interwar Europe (1919–1939), covering 137 elections across 25 democracies. Includes electoral results, ideological and organizational data for 401 parties and 35 alliances, and cabinet data.

Ethnic Power Relations (EPR)
Data on ethnic groups’ access to state power, their settlement patterns, links to rebel organizations, and transborder ethnic kin. The EPR dataset family is maintained by the International Conflict Research group at ETH Zürich.
