My hypothesis is that this demographic segment is driven by an induced fear by the likes of Bannon and Murdoch. At the extreme you have the Proud Boys and the conspiracy theories that de-humanise anyone left of Mrs Thatcher. You will recall the attempt to find the Pizza basement full of leftie kiddie fiddlers.
The success of this strategy (in both the US and the UK) is pushing politics to the far right libertarian edge of the spectrum and rewarding the already rich with much greater wealth and the poor with much greater poverty. Income inequality has risen markedly in the last decade. My personal hypothesis is this is mostly driven by the desire to extract the last few billions from fossil hydrocarbons. It is (if I am right) therefore no coincidence that Trump has overridden a lot of the green legislation from Obama like cafe and has promoted coal and oil. Likewise the UK versions have been driven by climate change deniers UKIP and the "get rid of the green crap" Tories.
Interesting that this ecological disaster policy is so soon after the exit: https://www.wildlifetrusts.org/news/...neonicotinoids
Hopefully Biden will start a change of direction.