Politics of Selucia takes place in a framework of a diarchic representative democratic republic, whereby the two Consuls jointly serve as both head of state and head of government. Selucia has a multi-party system. Executive power is exercised by the Magistrates. Legislative power is vested in the Selucian Senate. The judiciary is partly independent of the executive and the legislature, while the Senate has judicial power in cases of high treason and crimes against humanity. Selucia's 3838 constitution proclaims Selucia as functioning under the principles of collegiality, equality under the law, democracy, and civilian rule.