Political Ideology Direction of Policy Agendas and Maternal Mortality Outcomes in the U.S., 1915–2007

Objectives The causes for persistently high and increasing maternal mortality rates in the United States have been elusive. Methods We use the shift in the ideological direction of the Republican and the Democratic parties in the 1960s, to test the hypothesis that fluctuations in overall and race-specific maternal mortality rates (MMR) follow the power shifts between the parties before and after the Political Realignment (PR) of the 1960s. Results Using time-series data analysis methods, we find that, net of trend, overall and race-specific MMRs were higher under Democratic administrations than Republican ones before the PR (1915–1965)—i.e., when the Democratic Party was a protector of the Jim Crow system. This pattern, however, changed after the PR (1966–2007), with Republican administrations underperforming Democratic ones—i.e., during the period when the Republican Party shifted toward a more economically and socially conservative agenda. The pre-post PR partisan shifts in MMRs were larger for Black (9.5%, p < . 01 ) relative to White mothers (7.4%, p < . 05 ) during the study period. Conclusions for Practice These findings imply that parties and the ideological direction of their agendas substantively affect the social determinants of maternal health and produce politized health outcomes. Significance What Is Already Known on This Subject? The causes for persistently high and increasing maternal mortality rates in the United States have been elusive. What This Study Adds? We find that, net of trend, MMRs are higher under the most racially-conservative party of the period: The Democratic Party before the Political Realignment, the Republican Party after. Institutionalized racism—in the form of racialized federal-level policy—has detrimentally affected the health of all in the past century. Our findings bear important implications for political science, medical sociology, public health, and policy: A deep understanding of political processes is necessary for promoting health equity.