Elections and politics in Hong Kong: megathread

[Estrella]

What I like about this is the HK government is finally putting in the rule that all councilors have to swear an oath to the PRC in order to serve.  I obviously prefer the oath be for ROC and I personally would never swear and oath to PRC but the key the feature here is the oath has to be an entity that has the word "China" in it.

Ah, the wonderful absurdities of nationalism. This unironically reads like a line from The Bald Soprano.

[Estrella]

Apologies if this is a very basic question, but what are the main sociological divides in HK politics besides the obvious (locals-mainlanders)? In addition to the pro-democracy/pro-CCP divide, do different parties in each coalition have significantly different support bases?