I dunno, Romulus reminds me of a certain line from the show Yes, Minister.
Sir Humphrey Appleby: East Yemen, isn't that a democracy?
Sir Richard Wharton: Its full name is the Peoples' Democratic Republic of East Yemen.
Sir Humphrey Appleby: Ah I see, so it's a communist dictatorship.
Romulus is the People's Democratic Republic of Romulus.
I'm not sure we've seen any governments where a true democratic vote has resulted in invading another planet.