Among the laws that rule human societies,” de Tocqueville said, “there is one which seems to be more precise and clear than all others. If men are to remain civilized or to become so, the art of associating together must grow and improve in the same ratio in which the equality of conditions is increased.”1 In much of the world today, equality of political participation is growing much more rapidly than is the “art of associating together.” The rates of mobilization and participation are high; the rates of organization and institutionalization are low. De Tocqueville's precondition for civilized society is in danger, if it is not already undermined. In these societies, the conflict between mobilization and institutionalization is the crux of politics. Yet in the fast-growing literature on the politics of the developing areas, political institutionalization usually receives scant treatment. Writers on political development emphasize the processes of modernization and the closely related phenomena of social mobilization and increasing political participation. A balanced view of the politics of contemporary Asia, Africa, and Latin America requires more attention to the “art of associating together” and the growth of political institutions. For this purpose, it is useful to distinguish political development from modernization and to identify political development with the institutionalization of political organizations and procedures. Rapid increases in mobilization and participation, the principal political aspects of modernization, undermine political institutions. Rapid modernization, in brief, produces not political development, but political decay.