This study examines the effect of the country of origin of the vaccine on vaccination acceptance against COVID-19. More specifically, we show how the political context in Brazil has affected acceptance of vaccines produced in China, Russia, the US, and England at the University of Oxford. Our data come from a survey experiment applied to a national sample of 2771 adult Brazilians between September 23 and October 2, 2020. We find greater rejection among Brazilians for vaccines developed in China and Russia, as compared to vaccines from the US or England. We also find that rejection of the Chinese-developed vaccine is particularly strong among those who support President Jair Bolsonaro—a COVID-19 denier and strong critic of China and vaccination, in general.

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Research on presidential coattails in elections has focused nearly exclusively on two-party systems like the United States. Much less is known, however, about presidential coattails in multiparty systems where electoral and governing coalitions are common currency. Under coalitional presidentialism, we argue that presidential coattails are diffused, benefiting the president’s party but also her coalition party members, especially those most strongly associated with the coalition itself. Using electoral data from Chile and Brazil, two widely studied but distinct cases of coalitional presidentialism, we find strong evidence supporting this claim. The results carry important implications for students of coalitional presidentialism, presidential coattails, and party systems, more generally.

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