The government by ...
- ... two persons is called "diarchy,"
- ... three persons is called "triarchy,"
- ... many persons is called "polyarchy."
So, my question is, is there a word to define the government by the simple majority of persons?
More precisely, I'm thinking of a word that completes the following progression:
diarchy, triarchy, polyarchy, X.
In fact, I think that "polyarchy" doesn't necessarily imply that the number of persons involved in the government is greater than the 50% of the total number of persons involved.[I hope that this sentence is clearly comprehensible]
It's worth noting that "democracy" is not the word I'm looking for because such a word, as far as I know, defines a complex concept not based only on the majority criterion.
I have already asked this question on English Language Learners [→], but, just after having asked, the question was closed as off topic apparently because it was "not really a Learners' level of question." Yet, I think the StoneyB's and Mistu4u's answers aren't entirely satisfactory.