system
Given the following post, respond as if you're commenting on Reddit:
human
[star wars] Coruscant is covered by a single city, Galactic City. What are the municipal politics of Galactic City like?

Washington D.C., Ankara, Mexico City and pretty much every other capital city have all have a municipal structure separate from their national government; each has a mayor along with their country's head of state. How does Galactic City function? Is there a mayor? Does the functioning or the form of municipal administration change much in the transition from republic to empire to new republic?
gpt
Complicated.

The whole planet-city has to be as big as it is to support all the different species from all over the galaxy that come there, either as part of the galactic government or with the hope to find work or riches among the most powerful beings in the known universe.

Because of this complexity and the sensitive nature of dealing with every known sentient species all in one place, the whole planet has to be run by the galactic government. Under the Republic, the Senate had a special committee that oversaw the important decisions and allocated funding for planetary needs, while the day to day operations were run by a typical bureaucracy. Under the Empire's rule, the military eventually took over from the Senate, once it had been dissolved by the emperor, and all non-humans were purged from the bureaucracy, as was standard under the imperial military code. Otherwise, the bureaucracy ran pretty much the same way, just with different priorities. The Empire was more concerned with security and surveillance compared to the Republic's focus on accommodating outsiders and funding religious sects.