On 22 February 2017 political scientist Tim Mickler (Leiden University) defended his dissertation on the structure, composition, and working of parliamentary committees. He was awarded the exceptional predicate 'cum laude'.

Proceedings of the First International Conference on Byzantine and Ottoman Archaeology, Amsterdam, 21-23 October 2011

The Centre for Digital Heritage undertakes collaborative international research in the field of Digital Heritage. It is an initiative of the University of York.

This special issue of the Journal of European Policy presents results from the research on the European Union Enlargement and its Integration Capacity. The Journal of European Public Policy is one of the leading journals in this field.

Never has good policy been so important. From unemployment and a lack of affordable housing to regulating cryptocurrencies and protecting against cybersecurity threats, the challenges we face are complex and global. The text explains how policymaking works: from the emergence of policy ideas to deciding…

Political scientists Tom Louwerse, Simon Otjes & Cynthia van Vonno introduce the Dutch Parliamentary Behaviour Dataset, a record of parliamentary (voting) behaviour in the Dutch Tweede Kamer (Second Chamber, House of Representatives) since 1945.

Political scientist Corinna Jentzsch (Leiden University) about the organisation of rebel and government auxiliaries in the civil war in Mozambique (1976–1992).

Political scientist Maurits de Jongh (Leiden University/Sciences Po) argues that political liberalism is self-defeating as a framework of justification for liberal conceptions of justice. He explores how the framework's self-imposed criterion of acceptability in the eyes of all reasonable citizens leads…

Speeches and speech acts have been crucial in settling the question at the centre of every political debate: who gets what, when and where?

What determines civic engagement in transboundary hydropolitics and why has it been muted in the Eastern Nile Basin?

On the 13th of November, Hanna Fricke successfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Hanna on this achievement.

The sixth issue of Ex Novo explores how ‘peripheral’ regions currently approach both the practice and theory of public archaeology placing particular emphasis on usually underrepresented regions of Eastern and Central Europe, the Mediterranean and beyond.

The research project MAXCAP: Maximizing the integration capacity of the European Union: Lessons and prospects for enlargement and beyond starts with a critical analysis of the effects of the 2004-2007 enlargement on stability, democracy and prosperity of candidate countries, on the one hand, and the…

For every period, it is a challenge to unearth the details of political trafficking; yet the effort needs to include all relevant persons, groups, and institutions – not only those wielding formal responsibilities. We hope to reinvigorate this effort by inviting specialists to present their research…

Why obey the state? Dorota Mokrosińska presents a fresh analysis of the most influential theories of political obligation and develops a novel approach to this foundational problem of political philosophy, an intriguing combination of the elements of natural duty and associative theories.

How did parties as political organizations emerge?

This five year research project aimed to investigate the role of minor central places in the economy of Roman Central Italy.

This dissertation focuses on the production and consumption of a mediation show in China that collaborates with the local Justice Bureau and broadcasts on an entertainment channel—exploring answers to questions raised from the mentioned entertainisation, social and political, and cultural issues.

Furious protesters in Budapest and other Hungarian cities demand the departure of Prime Minister Viktor Orbán. The reason for the large-scale protests is the adaptation of the labor law, especially lucrative for German companies and investors, by the Hungarian prime minister.

On Friday 3rd February 2017 Leiden University hosted a PhD colloquium in conjunction with the University of Liverpool and the University of Oslo, on the topic of ‘Law and Politics in the European Union’. As part of the Interaction between Legal Systems 2.0 project, the colloquium presentations focused…

What should the EU do to support Ukraine, Belarus and Moldova? How can the European Union adapt its policies towards these countries in a very difficult and challenging geopolitical context? Ten years after its inception, the European Neighbourhood Policy (ENP) has fallen short of accomplishing its…

This coming June and July, excavations will continue at the Aguas Buenas archaeological site.

Impressions by Wouter Baas and Caroline Schep

In this article, Dimiter Toshkov investigates the determinants of COVID-19 vaccine hesitancy and refusal, focusing on Eastern, Southern and Western Europe.

The centre stimulates discussion and debate on the EU , European integration and the EU’s impact on European citizens. Special attention is given to the Netherlands, were support for EU integration seems to be in decline as evidenced by the rejection of the Constitution in Europe in 2005 and the forthcoming…

Under what circumstances do paramilitary groups limit their use of political violence? This article examines the use of political violence by the PIRA.

In what ways do historical and current events affect how we should judge the legitimacy of political authorities?

The Institute of Political Science is a vibrant department with nearly 70 academic staff in Leiden and nearby The Hague.

In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

Dutch politics has long been a paragon of stability. Think, for example, of our party system until, say, the last decade. At the same time, we also see occasional changes and significant shifts. Society has changed and this is reflected in, among other things, how we vote and how policy is made. About…

Profile Area Political Legitimacy, Leiden University

Are you thinking about studying Political Science? Watch the introduction video’s and learn more!

This volume challenges the idea that the development of ‘democracy’ is a story of rise and progress at all. It is rather a story of continuous but never completely satisfying attempts of interpreting the rule of the people.

At the Institute of Political Science we value our alumni. We can learn from you, and would like to contribute to your further development. And, of course, we want to lend a hand in connecting ‘our’ political scientists all over the world.

This book is the first comparative study of estimative intelligence and strategic surprise in a European context, complementing and testing insights from previous studies centred on the United States. It does extensive empirical analysis of open-source material and interviews in relation to three cases…

This COIn Grant 2025 awarded project allows Leiden University researchers and students to do research on the world’s largest corpus of digitized Ottoman language periodicals and books.

An evening program in the University Library and Middle Eastern Library in Leiden for everyone who has something to do with the Middle East; from Tajikistan to the Mahreb and from Istanbul to Sanaa. View the oldest books and clay tablets from the collection and listen to the most fascinating stories…