Let’s throw another pollster into the mix: YouGov, which conducts biweekly polls for the Economist. It has also asked about vaccination for the past year, but with a shift: In April, the question wording changed. Before that point, YouGov asked respondents whether they would be vaccinated when possible. After, they were asked to describe their vaccination status. Before that change, there was more opposition to vaccinations expressed by respondents. After, the responses have been fairly consistent — and just a bit higher than KFF’s.