The far-right and anti-vaccine attitudes: lessons from Spain's mass COVID-19 vaccine roll-out.

Our results are consistent with evidence that far-right politicians can encourage vaccine hesitancy. Nonetheless, we show that public attitudes towards vaccination are not immutable. Whereas a rapid and effective vaccine rollout can help to overcome the resistance of far-right voters to get vaccinated, they also seem to be susceptible to their party leader's discourse on vaccines.