Someone said :
Or age. (But why mention that when it doesn't suit an agenda?)
The point I'm making is that this is not very common internationally, and it gives the cities an advantage in elections by overrepresenting them compared to vote share. It gives Labour a floor protecting them from a wipeout. We need to look again at whether this is democratic.
The system reminds me of how the disenfranchised Blacks in the American South were counted for apportioning seats in Congress in the Jim Crow period. Hardly a template we would want to emulate.