[seanmcdirmid]

Sure. However, if South China and North China were actually different countries, you would notice a distinct differences in the trends between both.

And if Fujian somehow became a part of Taiwan, you might not notice much difference in CPC support between the province and the island.

[stcredzero]

Fujian is quite isolated from the rest of China. Until the modern era, the easiest way to get there was by sea.

And if Fujian somehow became a part of Taiwan

Parts of Fujian are claimed by Taiwan.

[seanmcdirmid]

Fujianese are also the most emigrant Chinese, it is rare to find one there who doesn’t have more than a few relatives abroad.

A special case to be sure.