Investigating the Relation of Political Orientation and Vaccination Outcomes: Identifying the Roles of Political Ideology, Party Affiliation, and Vaccine Hesitancy

Popular press and academic articles alike suggest that political orientation is a primary determinant of vaccination willingness, vaccination, and vaccine word-of-mouth (i.e., sharing of information regarding vaccines). In the current article, we test the validity of these suggestions, and we also assess the differential roles of political ideology (e.g., liberal-conservative) and party affiliation (e.g., Democrat-Republican) as well as the mediating effect of vaccine hesitancy’s dimensions. To do so, we perform a four-wave survey study with 223 participants that completed all waves. Our results support that political orientation indeed relates to our outcomes of interest. Our results also show that political ideology has a more pronounced effect than party affiliation, and the vaccine hesitancy dimensions of Health Risks and Healthy mediate many of these relations. From these results, we suggest many directions for future research and practice, including the integration of political discourse theories in studies on political orientations and vaccination.