Another view of how we got here:
https://www.salon.com/2018/11/10/making-sense-of-missouri-after-the-midterms/Over the years that I traveled to Southeast Missouri to go canoeing and fishing, the Democratic Party began its strategy of concentrating on the “battleground states.” You’d watch the political coverage, and it was all Florida and Ohio and Pennsylvania. Democrats went from contesting the whole country in elections to counting on holding the Northeast and West and what did they call it before it fell in 2016? Oh yeah, I remember. The “blue wall” in the “rust belt:” Wisconsin, Michigan and Pennsylvania.
The mistake Democrats have made over the last 40 years is to think that the people in Missouri who worked in that baseball cap factory are stupid, that they wouldn’t notice when Democrats stopped courting labor and went looking for contributions from hedge funders and venture capitalists on Wall Street and Silicon Valley, the same guys — and they are almost all guys — who started paying themselves so much money they’d make even Harold Geneen blush, if he was still with us. CEO pay went from about 25 times that of an average worker in the 1970s to 361 times as much. Indexed yearly income of the average American worker in 2016 was about eight times what it was in 1970.