In addition, it demonstrated that vaccine acceptance is influenced by education, political affiliations, and race. Voting intentions and demographics Although firm conclusions cannot be drawn at this stage, Alexander believes the political affiliations and demographics of the respondents reinforce each other in this survey. âThe ANC has particularly strong backing among older people, who are more likely to support vaccines than younger people, and, compared with the DA, it has more support among black people.â According to the report, 78% of those who intended to vote ANC were willing to take the vaccine. This was in contrast to 65% of DA and 62% of EFF supporters respectively.