Does the political affiliation of a city's leadership predict the stringency of its environmental regulations?
Aaryan Srivastava
11/08/2026
Cities across America have vastly different protocols and regulations about the environment, yet the reasons for the differences are not understood. While federal and state governments set broad environmental frameworks, in the end it is ultimately municipal leaders who make the legislative decisions that affect the residents in those cities. This study examined whether the political affiliation of a city's municipal leadership serves as a statistically significant predictor of local environmental policy stringency across 30 United States cities. A self developed instrument, City Environmental Stringency Index (CESI), was used to score each city across four policy domains: Renewable energy, Waste Management, Emissions Reduction, and Climate Adaption. Each domain was then scored on a scale of 0.0 to 2.5 yielding a composite score of all domains to be from 0.0 to 10.0. Scores for each domain were calculated from a defined scoring index. Cities were classified into three political categories (Democratic, Neutral, Republican) based on indicators of political alignment such as presidential election county data and mayoral party affiliation. It was concluded that political affiliation is a statistically significant predictor of environmental stringency.