Paywall, dang it. But I can guess the spin. The truth is, if you run the train on identity politics somebody has to be the caboose, and sooner or later the caboose gets tired of it. It can either sit there forever or detach, because it certainly isn't ever going to be allowed to sit up with the first class passengers.
They didn't really care when it was only white male working class, but when it became white female working class as it did in '16 they still blamed the voter. Another glance showed it had spread to black male working class and then the respective middle class demographics started to get nibbled away. At this point the MSM started to run stories like this.
But seriously, if the question becomes, as it has, "why don't people we say we hate want to vote for us?" then we've left the realm of politics and entered the one of fantasy. The glue of the Democrat party is hatred - they took that step knowingly and willingly in order to build a coalition of people they didn't hate, and that turned out to be nearly no one.
"The glue of the Democrat party is hatred - they took that step knowingly and willingly in order to build a coalition of people they didn't hate, and that turned out to be nearly no one."
You would think that one group they don't hate is gays, yet - over and over - we see that when they want to mock a conservative, they publicly accuse him of being a closet homosexual, and use gay slurs with impunity, or use gay slurs privately even regarding actual gays. We have seen this several times just in the past few weeks.