Among white voters with at least a college degree, Joe Biden holds a 55%-34% lead over Donald Trump in six battleground states, all of which Trump won narrowly in the 2016 presidential election.
www.forbes.com
Biden has a 21 point lead with college educated voters in 6 battleground states. It's much higher with those with graduate degrees. Nationaly I've seen the number at 23% in Bidens favor.
Now going to college doesn't make you smart, and it doesn't necessarily open up your mind either. But if you do go to college and put in some effort, do a decent job, there is a better chance you will be more open to things beyond just primitive base emotions. Things that are intellectual. Less fearful of the other, because you learned about their hopes and dreams and humanity. Etc... It's not a percent rule, but it's a solid trend.