The Mediating Influence of State Legislatures on the Linkage Between Interparty Competition and Welfare Policies

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Abstract
The purpose of this paper is to reformulate the linkage between interparty competition and welfare policies in the American states. Specifically, it is hypothesized that this linkage should be substantially greater among states with strong, effective legislatures than among states with weak, ineffective legislative systems. When legislative effectiveness was defined in terms of professionalism and welfare effort was assessed by seven specific measures, it was found that the link between party competition and welfare expenditures was indeed stronger among states with effective, as opposed to ineffective, legislative systems. Further, when controls were introduced for several socioeconomic factors, the linkage continued to be stronger among states with professional legislatures. It is concluded, consequently, that the influence of party competition on state welfare policies is mediated by the differential effectiveness of state legislatures.