Policy diffusion and strategies for promoting policy change: Evidence from California local gun control ordinances

Recent research efforts on policy innovation and diffusion largely have focused upon policymaking at the state government level. in this article we seek to develop an understanding of the ways momentum for policy change can be generated among receptive local governments. We use gun control policymaking within California to illustrate how focal government characteristics, the presence of regional associations, and the establishment of interest groups may lead to policy development and diffusion. We also identify linkages between interest groups, focusing events, and the successful use of a new image of gun violence as a public health problem, yielding insights into strategies that may be used successfully to promote policy change.