Race, politics, and public safety: A panel study of U.S. highway patrol and state police strength, 1981-2015

Abstract

This study assesses the social, political, economic, and traffic-/travel-related predictors of sworn highway patrol and state police strength in the United States between 1981 and 2015. Fixed-effects estimates based on analyses of 1,635 state-years indicate that theoretical accounts centered on racial threat theory, partisan politics, and gendered politics in part explain variation in this outcome. Findings suggest that changes in population density, the tax base, the percentage of the population without a high school degree, violent crime rates, and spending on social welfare at the state level, as well as shifts in local law enforcement strength, also influence state police and patrol organization strength over this period. Surprisingly, fluctuations in the number of state traffic fatalities per million vehicle miles traveled and the number of driver's licenses per 100,000 state population--two seemingly important traffic-/travel-related factors--have no impact on the rate of state police and patrol officers per 100,000 population.