News 07/29/2022 New dataset on recorded votes in the Bundestag The BTVote dataset has been updated until 2021 and is now available at Harvard Dataverse. 07/12/2022 New article in Zeitschrift für Parlamentsfragen In a new article in Zeitschrift für Parlamentsfragen (ZParl), Lukas Hohendorf and Ulrich Sieberer examine current developments in German party… 04/01/2021 New article in Party Politics Ulrich Sieberer and Daniel Höhmann study the effect of party system characteristics on the density of institutional regulation in 15 Western European… 03/03/2021 New article West European Politics Ulrich Sieberer and co-authors investigate opposition behavior during the Covid-19 pandemic in four parliaments 04/23/2020 New article in West European Politics Lukas Hohendorf and Ulrich Sieberer, together with Thomas Saalfeld, show that the federal government and opposition in the Bundestag are more likely… 02/10/2020 New article in the European Journal of Political Research (EJPR) Ulrich Sieberer, Julia Dutkowski, Peter Meißner and Wolfgang C. Müller show that European governments restrict rights of parliamentary minorities when… 10/22/2019 New Article in Party Politics Ulrich Sieberer and Tamaki Ohmura show that electorally vulnerable MPs elected in single member districts are more likely to defect from the party… 09/18/2019 New article in the British Journal of Political Science Ulrich Sieberer and co-authors show that the design of European cabinets is reformed frequently and follows a political logic. 07/17/2019 New Publication in Political Research Quarterly Daniel Höhmann analyzes the effect of the electoral system on the substantive representation of women's interests in the Bundestag. 05/20/2019 New article in West European Politics Daniel Höhmann and Ulrich Sieberer show that cabinet parties in Germany use parliamentary questions to monitor their coalition partner. 04/10/2019 New article in Paliamentary Affairs Ulrich Sieberer and Michael Herrmann show that the Frankfurt Assembly of 1848/49 followed the logic of a parliamentary democracy. 01/08/2019 New article in Legislative Studies Quarterly Ulrich Sieberer and Michael Herrmann explain party formation in the Frankfurt Assembly of 1848 12/07/2018 New article in British Journal of Political Science New datasets on all roll call votes in the Bundestag, 1949-2013 01/09/2018 New article in Party Politics Michael Herrmann and Ulrich Sieberer reconstruct the political space of the Frankfurt Assembly of 1848/49