Painters’ union leader Jimmy Williams Jr says that the Democrats have a messaging problem with working-class voters — and it isn’t just going to cost them a single election.
Wasn't Biden the first sitting president to join the picket line? Didn't Trump and Elon joke about killing the Unions? Seems it's like the union workers need to wake up. Tired of pointing fingers. The unions have abandoned the democratic party. They grabbed Trump by the hand because he promised victimism.
Since the two analyses give different results we can't say who gained ground and who lost it, but either way the fact that most union workers voted for Harris, despite her unpopularity with low-income people. It's simply not possible to blame union workers for the results in this election. I mean the second article you linked is pretty clear on why Harris didn't get the 100% you seem to be expecting.