In parliamentary and semi-presidential regimes, the head of government and head of state are separate individuals, and the legislature selects the head of government. Democratic systems are classified into three categories: presidential regimes, parliamentary regimes, and semi-presidential regimes.

In presidential regimes, the head of government is directly elected by the citizens and also serves as the head of state. Within each regime, there is a head of government as well as a head of state.

cabinets — formal groups of advisors to the chief executive. parliamentary regimes — democratic government systems in which the chief executive is selected by the legislative body and is a member of that legislature. presidential regimes — democratic governments in which the chief executive is selected separately from the legislative body and there exists a separation of powers between the presidency and the…. semi-presidential regimes — democratic government systems in which executive power is split between a prime minister (selected by the legislature) and a president (directly elected by the citizenry).