Conflicts between EU members about enlargement result from its re-distributive effects. EU members are more likely to suffer from enlargement if they profit from EU transfers and if they are relatively close to applicant countries in which unemployment is significantly higher than in member...

This paper analyzes fiscal competition under budget rigidities and tax equity (fairness norms). We outline a numerically solvable political economic model that treats the outcome of tax competition as one argument in the governments utility function, the others being public expenditure and tax...

When and how can weak states increase their bargaining leverage in international organizations? I argue that during phases of routine bargaining, distributional outcomes depend on the states' political and economic leverage and less on the formal allocation rules, so they are unfavorable to weak...

We analyze institutional solutions to international cooperation when collective action creates negative externalities and splits the actors into supporters and opponents, all of whom can spend resources toward their preferred outcome. We study how actors can communicate their preferences through...

This article reviews and analyzes recent research on regional integration. The review is structured along a political economy framework and proceeds in three steps. After analyzing the development of regional integration agreements (RIAs) from a historical perspective, I first discuss regional...

This paper analyses the properties of a computational model of multi-party competition in two and three policy dimensions. We present four substantive results: Firstly, centrifugal incentives prevent rational parties from moving to the mean of voters' preference distributions. Secondly, the...

We revisit the old and well-established theory of free-riding in military alliances. Existing empirical evidence infers free-riding from the larger military expenditures per gross domestic product of countries of larger size. Yet, larger countries have broader military and geo-strategic...

Causal inference seeks to identify a causal mechanism and the set of cases for which the causal claim makes sense. It is always based on a specific sample analyzed. However, whether results can be reliably generalized to the population depends on whether the sample represents a true random draw...

Terrorism is an instrument for groups that cannot achieve their political goals legally. One important strategic function of terrorism is to weaken the government - either directly by attacking representatives or supporters of the government or indirectly by causing a political response, which...

This paper analyzes the impact of the number of parties on turnover rates within an endogenous partisan preference framework. Our results show that the turnover increases in the number of parties under various levels of individual propensity to abstain. We find strong interactions effects...