sitenoise, i follow paul krugman, the nobel prize winner, on the pages of the NYT. he had a theory about that. he once asked the question, why are working-class white folks in the US not more in the column of the democrats? after all, they should support all the economic populist proposals of the democrats (free/affordable health care, medicaid/medicare, education, etc.) that would benefit them. and his conclusion was, after some explanation of various factors, that the GOP's appeal to racism, ignorance and fear trumps the economic populism they should support... which i think is a very good explanation. (see the kentucky example i offered above.)
in the US, it is also widespread the myth that the republicans are better for the economy (really? in the last 30 years, we saw clinton presiding over an economic boom and a shrinking deficit, then bush crashed the economy; then obama had to clean it up and then it was booming again; only to have the corrupt orange dump crash it again; and now it looks like biden will have to fix it again). (i'm not saying i loved clinton or obama policies, but they were certainly better than the GOP's -- for example, i hated clinton's relying on the rubin school for guidance, which obama also inherited.) and also the myth that the GOP is stronger on law and order or national security.
but then people believe the dump is a self-made billionaire (NOT! he inherited billions from his father, or stole it from his other family). he went through several bankruptcies, his businesses were mostly a failure. he was so desperate for money that he had to start several scams, like his "university". if he were so rich, why would he need to steal money from desperate people, to take his fake courses? (my understanding is that he inherited $400 million from his father decades ago; that would be equivalent of someone inheriting over $2 billion today. if he were a lazy investor and put that money into investments decades ago and didn't do anything, he would not be any richer than he is today. so much for the financial genius myth.) i truly believe the major factor that got him elected was that awful TV show...
people are stupid. they vote for what makes them feel better, not with their brains.
also, way back in the 1990's, the democratic socialist writer michael harrington was on TV, and they asked him about the inequality in the US. and he said, when you tell the working class people how fucked up the US system is, how unequal it is, how biased towards the wealthy it is, people don't necessarily say, "omg, it's awful. let's change our system"; instead, they say, "how can i get to the top?"