There are other attributes of each state that correlate to vaccination rates, though none as strongly. Education, for example, has an r-value of 0.67: the more college graduates there are in a state, the more likely it is to have a high vaccination rate. But when we plot that figure against vaccination rates, you see that this also correlates to the 2020 vote, since states with more college graduates also tended to vote more heavily Democratic.

Source: Washington Post July 06, 2021 22:46 UTC