The dramatic increase in American state prison populations over the last three decades has sparked considerable research interest. Empirical research has most often examined changes in prison admissions or populations. Few studies, however, have considered another important indicator of punishment-shifts over time in state corrections budgets. This study examines variation in annual, state-level corrections expenditures as a proportion of state total expenditures from 1980 to 1998. We draw together existing theoretical arguments about criminal punishment under a common rubric that we call a "politics of social order perspective" which focuses on state responsibility for the maintenance of social order and the need for state officials to maintain office through popular election. From this view, partisan politics, economic and racial threat, citizen preferences, fiscal considerations, policy priorities, and crime are important explanations of corrections spending because they affect strategies for maintaining social order, garnering votes and maintaining political office. Our findings generally support this perspective. Specifically, partisan politics, racial threat, state economic prosperity, and budgetary priorities all play a role in determining the proportion of state expenditures devoted to corrections over time.