This is a seminal text in the public policy literature. Of the several models of the public policy process, Kingdon’s multiple streams model was perennially one of my favorites. The model is considerably deeper and attempts to be a more all-encompassing theory of public policy setting than the text book summaries give credit. Like the models in psychology or economics, it is best to have several models at your disposal that you can compare between and pick and choose to apply to best fit the situation at hand.
From my perspective, I like to zoom out and compare the usefulness and efficacy of a theory of public policy against the topical (memoirs and opinion writers), sociological (e.g. Webber, Giddens) and socialist models (e.g. Mouffe, Meiskins Wood). The proponents of socialist models counter that the value of their theories are not their use-value, but their value in transcending late stage capitalism and pointing the way to a more equitable alternative. From my perspective, that is their usefulness. But there is no point in forever pining for the new Jerusalem or the kingdom of heaven if it is nothing but a pipe dream. Like the myth of Orpheus and Eurydice, that is like singing beautiful songs when you don’t have food to eat.
Public administration and public policy studies are relatively speaking the newest entrants to this equation. Taking a step back, it is worth noting what they are very briefly. They are modern disciplines; meaning they emerged and came of age during the late 19th century and the 20th century. They were designed as and tend to be progressive, in the original political sense of the word. They were designed to model and conceptualize the public policy process as it actually happens and functions. They also aspire to model the areas of dysfunction and conceptualize which are features and which are bugs of the system.
One advantage of the Kingdon model is his conceptualization of the coupling of the streams and the emergence of windows of opportunities. Basically, Kingdon models how windows of opportunity have opened when the streams converge. Namely, windows open when, at the same time, the voting blocs in congress and the administration are aligned in the politics stream, out of the problem stream a problem has arisen or is constructed through changes in the national mood or galvanizing events, and within the policy stream the policy solutions have been already worked through by academics, think tanks, and congressional staffers and are ready at hand for congress and the administration when the issue reaches the decision agenda.
In a strange unanticipated convergence, the Kingdon model for agenda setting and the public policy process is rivaled on the European post-Marxist side of the pond by Louis Althusser in his last phase and Chantel Mouffe. Their models, although coming from vastly different backgrounds, provide a topography of government or the state, the relations to political problems or interests from the base, the articulation and deliberation of alternatives, and how issues reach the decision agenda. In either case, the use-value is as a model or tool in the hands of constituencies, coalitions, and organizations on the ground. They prove their usefulness as models to fit to situations within the state and public policy process and provide the ability to act when windows of opportunity present themselves.