How does spatial interdependence between countries affect domestic levels of repression? The current literature on state repression focuses on unit-level/common shocks explanations and treats countries interdependence as statistical nuisance. This paper relaxes the null hypothesis of policy independence in state repression and examines the theoretical and empirical implications of spatial interdependence in the democracy-repression nexus. Combining spatialeconometric analysis with latent measures of democracy and repression in 138 countries between 1947 and 2007, the paper shows that (1) there is a robust diffusion effect of repression at a regional level, (2) previous literature has over-estimated the suppressing effect of democracy (when spatial interdependence is not accounted for), and (3) trade relations and security alliances are the main drivers of regional diffusion of repression.