Despite increased government involvement with public policy and the evolution of considerable scholarship on public policy since the pioneering efforts of theorizing and “modeling” of its “founders”, its initial formulations continue to influence the theoretical literature, empirical research and methods of analysis that characterize contemporary scholarship on public policy. From these initial formulations, several explanatory models, especially the neo-institutionalist strand were developed to better understand how and why the government does or does not do some action that will reverberate in the lives of citizens. This article examines some models that can be borrowed for the analysis of public policies formulated by different governments. In this paper four analytical models were examined: Institutional Analysis, Policy Network, Multiple Streams, and the Advocacy Coalition Framework. These approaches were considered for his internal consistency and applicability in the study of public policy.