Also, in recent years/decades there has been high correlation between education levels and political leanings. Piketty, in his most recent book Capital and Ideology, made an interesting observation: up until the 1980s blue collar works tended to vote for more-Left parties and white collar (more educated?) workers for more-Right parties. Then in the the 1980s and 1990s it swapped to the point that the more educated you are the more Left-ish you are likely to vote. And this phenomenon is true in basically all Western countries.
There's a high correlation between population and political in the US:
> There's a decisive break between Democratic and Republican support at a population density of 800 persons/per square mile.
* https://www.bloomberg.com/news/articles/2013-04-01/how-the-d...
See also Canada:
* https://www.macleans.ca/politics/ottawa/338canada-the-urban-...
Also, in recent years/decades there has been high correlation between education levels and political leanings. Piketty, in his most recent book Capital and Ideology, made an interesting observation: up until the 1980s blue collar works tended to vote for more-Left parties and white collar (more educated?) workers for more-Right parties. Then in the the 1980s and 1990s it swapped to the point that the more educated you are the more Left-ish you are likely to vote. And this phenomenon is true in basically all Western countries.