Interesting text from Thomas Piketty
http://piketty.pse.ens.fr/files/Piketty2018PoliticalConflict.pdfIt shows that in the 1950s and in the 1960s, the voters of the American democrats, British labour and French socialists had lower scholarity level than the average of the population. In the 21th century, the voters of these parties have higher scholarity level than the average of the population.
In the mid 20th century, there was the polarization elite voting for the right vs. workers voting for the left. In the early 21th century, there is the polarization business elite voting for the right vs. academic elite voting for the left.