Having lived 20 years abroad, including my core years of personal adult development, and having returned to my homeland were I became a member of a small Leftwing party, I keenly notice just how much people are, seemingly unaware of it, frequently shaping their thinking and even practice of being Leftwing on local cultural factors: pushing up in the party the sons and daughters of old hands or selecting people for positions of responsibility based on liking them rather than merit isn’t really being Leftwing (it’s quite literally the opposite of Fair and by being unmeritocratic one actually reduces the chances of success of the party) and people making speeches of the “give shit to my group” (women, teaches, pensioners, whatever) variety isn’t being Leftwing, it’s disguising one’s greed as being “for the group” and has little to do with the common good.

The point being that all political ideologies get adjusted by those who practice tehm and they do it based on what they thing is normal, and most people think “normal” is what they’ve seen around themselves their whole lives, so it’s expect that the political ideologies that end up being successful in a country “go along with the grain of the wood” and adopt the local’s ideas of “normal”.