solarz
Brigadier
The primary purpose is to ensure that pro-China factions would win the elections. The secondary purpose is to make sure even if oppositions won, they wouldn't rock the boat.
I think that's a matter of opinion and largely irrelevant. The fact is Beijing's policies brought about tight economic integration with TW and HK.
I think it's unrealistic to expect Beijing to be able to determine TW and HK election results when the US can't even do that in Iraq and SK.