Divided by Income? Policy Preferences of the Rich and Poor Within the Democratic and Republican Parties

Research consistently demonstrates that differences between the policy preferences of high- and low-income individuals are surprisingly small, at least at the aggregate level. We depart from this work by considering the size of income-based differences in opinion within political parties. To do so, we use responses to 144 policy-specific questions in the 2010–2020 Cooperative Election Study (CES). Our effort demonstrates that differences in opinion among the rich and poor tend to be larger within the parties than in the overall population. Interestingly, these gaps are largest among Democrats. We find that these larger gaps persist even after accounting for the party’s racial and ethnic diversity. Furthermore, among Democrats, class-based gaps in opinion are larger than the gaps we observe among other potential intraparty cleavages, such as age, gender, and religiosity. Our results suggest important implications for the growing literature on representational inequality.