Polsby and Wildavsky’s classic text, now updated by Stephen Schier and David Hopkins, argues that the institutional rules of the presidential nomination and election processes, in combination with the behavior of the mass electorate, structure the strategic choices faced by politicians in powerful and foreseeable ways. We can make sense of the decisions made by different political actors—incumbents, challengers, Democrats, Republicans, consultants, party officials, activists, delegates, journalists, and voters—by understanding the ways in which their world is organized by incentives, regulations, events, resources, customs, and opportunities. Thoroughly revised and updated, this Sixteenth Edition provides everything students need to know about presidential elections going into the 2024 cycle.