Is that of their citizens, or their population. Because The citizens have become more equal at the expense of taxing an enormous permanent resident and migrant work force who do not get the full benefits. The US and most other countries can't hope to have such a deep reservoir of foreigners to bleed dry in the name of equality.
The largest cities in the US are politically in sync and have been for decades. It’s no surprise there’s not much diversity of outcome when everyone is calling the same plays from the same playbook.
