Ankh-Morpork had dallied with many forms of government and had ended up with that form of democracy known as One Man, One Vote. The Patrician was the Man; he had the Vote.

— Terry Pratchett, Mort

Explanation: Under feudal systems, most established and best defined (though as with all things in academia, contested) in medieval Europe, power is held by a small group of unelected hereditary nobility who rule over lower-ranking vassals, some of whom, themselves, have vassals under them.

However, some feudal systems DID have elections! Some even for electing the monarch himself!

... wherein only the highest nobility would actually have a vote.

I like doing North Korea mode in Crusader Kings. My thralls must vote for me because they are all behind bars.