Accounting for Ministers uses the tools of modern political science to analyse the factors which determine the fortunes of Cabinet ministers. Utilising agency theory, it describes Cabinet government as a system of incentives for prime ministerial and parliamentary rule. The authors use a unique dataset of ministers from 1945 to 2007 to examine the structural and individual characteristics that lead to the selection and durability of ministers. Sensitive to historical context, it describes the unique features of different Prime Ministers and the sorts of issues and scandals that lead to the forced exit of ministers. The authors identify the structural factors that determine ministerial performance and tenure, seeing resignation calls as performance indicators. Probing the nature of individual and collective responsibility within Westminster forms of government, its rigorous analysis provides powerful new insights into the nature of Cabinet government.