this is well known
https://www.reuters.com/world/us/bidens-big-weakness-vs-trump-voters-without-college-degrees-reutersipsos-poll-2024-06-01/
and before arguing education doesn't correlate with intelligence....A meta-analysis of 42 data sets found that an additional year of education is associated with a 1–5 IQ point increase in cognitive abilities. This effect is consistent across the life span and for all cognitive abilities studied.