The reference publication for the International Treaty Ratification Votes Database (ITRVD) version #1 has just been published by Foreign Policy Analysis. You can find the research note here: Please cite ITRVD in the following way: Ostermann, Falk and Wolfgang Wagner. 2023. “Introducing the International Treaty Ratification Votes Database”. Foreign Policy Analysis 19:4, October 2023, orad023,


We have worked hard over the last month to provide you with a new version #3 of our PDVD database that now includes 1,022 parliamentary and 5,540 party votes from 301 parties from 21 countries. Thanks to all our contributors you have collaborated in this data collection effort, and to our research assistant Stephan Friebe for data treatment! You can find the new data on our Deployment Data page.

PDVD now funded by the Gerda Henkel Foundation

We are pleased to announce that as of July 2019, the Parliamentary Deployment Votes Database is receiving funding from the Gerda Henkel Foundation for setting up the 3rd version of the PDVD dataset. We are currently busy with staffing up our project crew and reaching out to new international experts in order to add new countries to the database. As of now, we can already announce that Canada, Ireland, Lithuania, South Korea, and Turkey will be added to the database – more to come…


After lots of work in a considerably grown project team (get to know the group on Who We Are) we can now proudly present a very much enlarged version #2 of the dataset. Version 2 now covers 11 countries across Europe plus the United States, 514 votes, 2682 cases of parties voting on a mission, and much more. Check it out at the Our Data page.

Welcome to deploymentvotewatch!

Deploymentvotewatch collects and shares data on parliamentary votes on the deployment of armed forces. Since the end of the Cold War, democracies have been participating in military missions of various kinds, ranging from peacekeeping to war. These deployments have raised questions about their democratic legitimacy and parliamentary control in particular. In many democracies, deployments decisions are the exclusive competence of the government, and parliament is only informed. In a growing number of cases, however, such decisions have been put to a vote in parliament. Deploymentvotewatch documents and analyzes these votes. Deploymentvotewatch serves a dual purpose: As scholars of political science, we are interested in an analysis of deployment votes. By sharing the data we collected, we hope to stimulate further analyses. As citizens of countries that have participated in military missions, we consider the publication of deployment votes to be a contribution to the democratic control of security and defense policy. At the moment, deploymentvotewatch documents 183 votes in plenaries for the period between 1991 and August 2016 in France, Germany, Spain and the United Kingdom. Our ambition is to regularly update the data on the countries already covered and to extend the remit of deploymentvotewatch to further countries in Read more