Why can some interest groups influence policy-making while others cannot? Even though
this question is central to the study of politics, we know little about the factors explaining …

Why are some interest groups able to lobby political decisions successfully whereas others
are not? This article suggests that the issue context is an important source of variation …

The analysis of interest group influence is crucial in order to explain policy outcomes and to
assess the democratic legitimacy of the European Union. However, owing to methodological …

Does lobbying success in the European Union vary systematically across interest group
type? Interest groups lobby the European institutions in order to achieve policy decisions …

Scholars have emphasized the need to deepen investigation of intraparty politics. Recent
studies look at social media as a source of information on the ideological preferences of …

This work investigates the process of position-taking, focussing on the factional bargaining
within the party. Exploiting two recently built datasets that estimated the policy positions of …

Sanctions and homogeneity of intra-party preferences are the two main pathways to party
unity in roll-call votes. However, only a few works have managed to properly measure the …

This paper analyzes how factional conflict and intra-party organization affect a party's
likelihood of being involved in a ruling coalition. We focus on Italian parties (between 1946 …

This study examines speeches in the European Parliament relating to asylum. Conceptually,
it tests hypotheses concerning the relation between national parties and Members of …

This article investigates intra-party politics and explores the determinants of factional
breakaways, going beyond the unitary actor assumption. It presents a game-theoretic model …