In the already vast, and rapidly expanding, literature of political modernization, it is rather surprising that little use has been made of the concept of growth, while development, with all its ambiguities, has become a fixture. This perhaps reflects the selective methodological influence of economics, where development is a fairly well-defined research field concerned with problems of countries with low per capita income. What needs to be underscored, however, is that in economic usage development is intimately related to growth. In this paper I propose to discuss the distinction between growth and development in economics and then attempt to draw a similar distinction for politics, emphasizing throughout the implications of the historical sequence and timing of these processes for modernization.