Errr, what about "semi-presidential" systems like France's Fifth Republic? Per https://en.wikipedia.org/wiki/Semi-presidential_system https://en.wikipedia.org/

Errr, what about "semi-presidential" systems like France's Fifth Republic? Per https://en.wikipedia.org/wiki/Semi-presidential_system https://en.wikipedia.org/wiki/Semi-presidential_system the difference is to whom the cabinet is responsible, i.e. who can fire them. Other examples where I'm pretty sure "it works" would include the Republic of China (Taiwan) and maybe Portugal? From the list of fully presidential with a prime minister (see link below), South Korea seems to have been making it work for a long time now, and, yes, I remember Park Chung-hee et. al. ... ah, and I see his first born daughter is now President, but obtained that by normal means, yes? Hasn't their Sixth Republic has been stable since 1987? For fully presidential, while I'd be hesitant to say Argentina entirely "works", their system of government has been in place since after the Falklands, right? I would tentatively add to the list from vague memory Bolivia, Brazil, Chile, Colombia, Costa Rica, Mexico, and the Philippines from https://en.wikipedia.org/wiki/Presidential_system#Republics_with_a_presidential_system_of_government https://en.wikipedia.org/wiki/Presidential_system#Republics_... Although few of these systems have been in existence for that many decades (but see my other comment, I believe the same as of Hoover/FDR), and you could legitimately claim e.g. Mexico prior to the PRI allowing itself to lose wasn't really one, but I'm not sure it's quite that dire.