The Timing of Cabinet Reshuffles in Five Westminster Parliamentary Systems

Despite their political prominence, cabinet reshuffles have not attracted a great deal of scholarly attention. We provide a theory of cabinet reshuffles that emphasizes both systematic and time‐varying causes. In particular, we argue that prime ministers employ cabinet reshuffles to retain power in the face of both intraparty and electoral challenges to their leadership. We use repeated‐events duration models to examine the timing of cabinet reshuffles in Australia, Canada, Ireland, New Zealand, and the United Kingdom in the period 1960–2001, and find support for several of our hypotheses.