Ah but then you have to get rid of the Esseleriachy. And the Inquisition. And Space Marines must allow their planets to have democracies too. And God knows how Mars would react.
Wasn't Poland-Lithuania one as well, yet it usualy elected its king? Why couldn't the Imperium be the same, just calling the leader they elected for life (and beyond) President, Premier, Protector or something?
Wasn't Poland-Lithuania one as well, yet it usualy elected its king? Why couldn't the Imperium be the same, just calling the leader they elected for life (and beyond) President, Premier, Protector or something?
Why not?
While the Emperor on His throne is alive in a certain sense of operating as a source of powerful magic, he has not been able to speak or otherwise express any opinions for millennia, and is not seriously expected to resume such capabilities.
Which means that the actual decisions, including choosing new decisionmakers, must be made by others.
Precisely who?
The Imperium is still nominally ruled by the Emperor of Mankind. However, since his ascension to the Golden Throne, the duty of actually ruling the Imperium falls to the Senatorum Imperialis - the Imperial Senate, formed by the twelve High Lords of Terra. The identities and responsibilities of these High Lords may vary, as individuals inevitably die and their influence grows and wanes, but its members are always the leaders and representatives of the most powerful Imperial organisations.
This system endured for ten thousand years until the end of the 41st Millennium, when the revived Primarch Roboute Guilliman became Lord Commander of the Imperium and ruled over even the High Lords.
Why not?
Iraq under Saddam, current North Korea and many Latin American military regimes were all republics. So were Venice, Genoa and Ragusa. Rome was, Carthage was. Even Poland-Lithuania is somethimes called the ''First Polish Republic''.
Which definition? Plato's Republic comes closer to the Imperium than the USA.
re·pub·lic
rəˈpəblik/
noun
noun: republic; plural noun: republics
- a state in which supreme power is held by the people and their elected representatives, and which has an elected or nominated president rather than a monarch.
You could even do it like rome and give everyone voting rights but you need to be on Terra to vote .You could easily have an Imperium that labels itself a Republic but is otherwise exactly the same as canon because only 1% of the population (if that) actually has voting rights.