Source: Christopher Warshaw, Annual Review of Political Science, Vol. 22, 2019
From the abstract:
In recent years, there has been a surge in the study of representation and elections in local politics. Scholars have made progress on many of the empirical barriers that stymied earlier researchers. As a result, the study of representation and elections in local politics has moved squarely into the center of American politics. The findings of recent research show that local politics in the modern, polarized era is much more similar to other areas of American politics than previously believed. Scholars have shown that partisanship and ideology play important roles in local politics. Due to the growing ideological divergence between Democrats and Republicans, Democratic elected officials increasingly take more liberal positions, and enact more liberal policies, than Republican ones. As a result, despite the multitude of constraints on local governments, local policies in the modern era tend to largely reflect the partisan and ideological composition of their electorates.