Seems like a loaded question. I think they'll figure it out, messaging is part of the problem, especially cause a lot of culture war stuff and secular/urban elitism that drives messaging is truly detested by the working class, but not the entire problem. "We have hand outs for them, why don't they love us?" maybe is the place to start but maybe people want more than that from the people driving policy? They want a seat the table in building the country and not just a life free from unbearable poverty? Just some ideas, it's not my problem.
It sounds a lot like you're suggesting politicians should engage in more populist messaging to make people feel heard...like railing against NAFTA even when they just have a few quibbles with its specifics?
https://today.yougov.com/topics/politics/trackers/the-democr...