There used to be a wide difference in voting between bachelor's and advanced degree holders, with the latter being much more Democratic (going back to the 1980s I think when there was enough for them to be separated out in national survey). But in 2020 there was little difference (56-40 for bachelor's vs. 58-42 for postgraduates). Any explanation why?
Having a postgraduate degree is much less of a niche thing than it used to be. A lower percentage of postgraduates are academics than was the case 40 years ago