'Over the last 30 years or so, 'constitutional political economy' has emerged as an important branch of political economy, or more broadly political science and economics. This Primer presents a comprehensive survey of the diverse literatures that are relevant for the field. Although primarily designed for use in the classroom, it provides an excellent introduction to the field for scholars unfamiliar with this literature. Moreover, Stefan Voigt surveys such a vast number of relevant contributions that even scholars working within the field will discover works with which they were unfamiliar.' Dennis Mueller, Emeritus Professor of Economics, University of Vienna