The Left's failure had nothing to do with this election, what passes for the Left in the USA anyway. The Left were irrelevant.
The Stupidity of Crowds is as likely as its intelligence but if its news and cultural media only feed it pap and poor fiction it's not stupidity but choosing what seems less worse to them.
All voters, whether educated or not, regardless of which shard of the species they flock with voted with the same motive.