The Empire is ruled from Constantinople with the various ministers selected by the Emperor from the Senate and the Assembly. Although not required to, in practice the Emperor selects the Chief Minister and other executive office holders according to whatever grouping of parties currently hold a majority or can at least command sufficient votes to govern.
Laws can be initiated only by the Emperor or a minister and are required to be approved by a vote in both the Assembly and the Senate. However the Emperor is capable of ruling by degree.
Each province has a number of assembly seats roughly in line with population with elections every 4 years. Electoral districts vary in size and are subject to review every 10 years following the census. Only citizens of the 1st class (property owners) and the 2nd class (specified professions/trades and those with a minimum taxable income) have the franchise.
The senate has 300 members drawn from the Patrician Class. Patricians are those from noble families or have held high office within the Empire – Governors, Ministers, senior military and civic positions. Senators represent Dioceses and are appointed until the Senate is ‘reviewed’. The Emperor can declare a ‘review of the Senate’ at any time which effectively dissolves the body and allows the appointment of a new one. Senators are elected by Patricians from their Diocese although by tradition the Emperor can directly appoint all the 60 Senators for Thrace and Greece. This he rarely does although it is usual for the Emperor to make clear those he wishes to see elected and leaves it up to the Patricians to vote accordingly.