Political economy has primarily paid attention to the principal‐agent relationship between citizens and politicians and the role of competition and institutions in disciplining political agents. However, as the electoral control of politicians and the credibility of policy commitments are limited, this perspective needs to be complemented with an economics of political selection that takes into account the heterogeneity in the quality of those elected to political office. We review the emerging literature, which investigates the institutional determinants of political selection. We discuss pay in politics, parties, their candidate selection procedures and electoral rules, institutions enhancing transparency in politics, and institutions which govern dual office holding in different branches of government. We argue that further comparative analyses are essential in order to gain an improved understanding of the impact that institutions have on political outcomes, not only via the channel of accountability, but also via the channel of selection.