There's so much to say about the midterm elections, which defied most expectations, but if someone asked me to explain what happened in ten words or less, I'd say something like, "College-educated voters fought for abortion rights and democracy."
I don't even think it's hyperbole. Democrats overperformed all across the country (well, besides Florida and New York), and nothing else could easily explain that outcome besides the twin threats the GOP posed to abortion and democracy itself.
And yes, voters with a college degree are a major part of the story. They were still typically voting Republican just a decade ago (see the 2014 midterm results), but having them as part of the Democratic coalition has changed US politics profoundly.
The best thing that could come from the midterms is that the GOP finally moves on from Trump, moderates its stance on abortion, and goes back to accepting election results. We'll see what path they take in 2023.