How getting the right actors involved can help successful local policies spread across the country

One of the oft-cited advantages of the US system of government is that it gives state and local governments the ability to innovate in policymaking. But how can policies which are successful in one area be taken up elsewhere? In new research which examines the introduction by states of drug courts for non-violent offenders, James W. Douglas, Ringa Raudla, and Roger E. Hartley write that the spread of such policies is influenced by other governments who have already adopted the policy, state and local governments, and professional, national, and regional associations and lobby groups. Without the support of such key actors, they write, successful local policy innovations are unlikely to spread widely