[alexqgb]

The most important cities (culturally and economically) are, at least, left-leaning.

That's not a coincidence. It's a direct product of cosmopolitanism. The cities that represent it most clearly are its capitals. Like any working system, it has rules. If you want the benefits, you need to play be the rules. If you don't, you're free to leave. Goodness knows your apartment won't go unfilled for long.