Wait do you not know what the KMT did? They're a rightwing party that killed/disappeared 30k journalists and intellectuals in Taiwan. How in the world is that comparable to the "union"? (But also yes Puerto Rico might be a better example).

In the sense that they're on the V-Dem index, they have election laws, they have voter rolls, they have voter turnout, etc. Yes they have one party, so you don't directly vote for the President, but neither do Americans.