Datasets I have built or helped build. Open where the data sources allow; release status noted per dataset.
Plenary protocols of all 16 German Länder parliaments, 2000–2023, in a single research-ready corpus: more than 14 million speech paragraphs with speaker, party, and session metadata, linked to the StatePol database of Länder politicians.
Hand-coded parliamentary debate data on how political parties argued about Germany's federal system during the COVID-19 pandemic. The data behind our papers in West European Politics, Publius, and der moderne staat.
Survey data on anti-Asian racism in Germany during the COVID-19 pandemic, from the Berlin University Alliance project with HU Berlin and the DeZIM Institute: a community survey of people of Asian descent (Innenperspektive) and population surveys (Außenperspektive). Basis of our work in The British Journal of Sociology and Aus Politik und Zeitgeschichte.
Original German survey data on territorial identities, inter-state sympathy, and citizen preferences for regional versus central government. The data behind the Regional Affective Polarization project and the Tagesspiegel Bundesländer sympathy feature.
Digital lab experiments and two national surveys on negational group identities in Germany, collected 2026–2028 in the Thyssen-funded Not Like Them project.