The People. The people are the voters, this is the beginning of the process. Every member is allowed to vote.
The Senate. The Senate is the guiding force of KOV. Our best minds and kindest souls reside here. They command the policies of KOV, and the rules and laws. However Senators are still bound by their military rank; they cannot order anyone of higher rank, and when an officer is present, must rely on his judgement of the situation.
The Imperator.
The chosen of the Senate to lead KOV. The Imperator is the one the Senator's judgement relies on. The Imperator may change the laws and rules as sees fit, unless 3 of the 10 Senators challenge him. If more than five Senators challenge him he may lose the title.