Is Cancer Immune from Partisan Polarization? How Partisan Identity Motivates Opposition to Preventative Cancer Vaccination in the U.S.
As one of the leading causes of death in the United States, cancer impacts the lives of Democrats, Republicans and Independents alike. Correspondingly, we might expect experimental cancer preventatives to be more-or-less “immune” to partisan polarization. Experiences with the deadly COVID-19 pandemic, however, suggest that even amid an unprecedented public health threat, some Americans were nevertheless motivated by political partisanship – particularly on the ideological right – to reject life-saving preventatives. In this study, I investigate whether tying partisan accomplishments in funding cancer prevention research to vaccine development might influence public acceptance of “personalized cancer vaccines,” which prevent the onset of cancer using tumor detection and mitigation mechanisms informed by one’s DNA. In a pre-registered analysis plan and survey experiment, I find that Republicans are less likely (in the absence of elite cues) to intend to receive personalized cancer vaccines and/or recommend that others do the same. Experimentally, I find that when respondents are exposed to information wherein Democrats claim credit for taking action to fund cancer research, polarization tends to increase; such that Republicans become even less likely to intend to receive a vaccine. I conclude by discussing how these findings can motivate effective political communication aimed at resolving one of the greatest public health crises of our time.