This article examines the sources and processes of institutional change in one important aspect of EU politics – the legislative procedure of codecision – and shows how interstitial change of institutions that emerges between formal Treaty revisions and under specific conditions may be formalised in subsequent formal Treaty reforms. We develop two related models of ...

In this article we explain how actors’ ability to bargain successfully in order to advance their institutional preferences has changed over time as a function of the particular institutional context. We show how actors use their bargaining power under given institutional rules in order to shift the existing balance between legislation and delegation, and shift ...