Systems of government
Republican forms of government:
with both an executive presidency and a separate head of government that leads the rest of the executive, who is appointed by the president and accountable to the legislature
with a ceremonial and non-executive president, where a separate head of government leads the executive and is dependent on the confidence of the legislature
Republics in which a combined head or directory of state and government is elected or nominated by the legislature
in which all other parties are either outlawed or only enjoy limited and controlled participation in elections.
Countries where constitutional provisions for government have been suspended
Countries which do not fit any of the above systems (e.g.
or unclear political situations)
government is the system or group of people governing an organized community, generally a state.
In the case of its broad associative definition, government normally consists of
legislature, executive, and judiciary. Government is a means by which organizational policies are enforced, as well as a mechanism for determining policy. In many countries, the government has a kind of constitution, a statement of its governing principles and philosophy.
While all types of organizations have
governance, the term government is often used more specifically to refer to the approximately 200 independent national governments and subsidiary organizations.
The main types of modern
political systems recognized are democracies, totalitarian regimes, and, sitting between these two, authoritarian regimes with a variety of hybrid regimes.  Modern classification system also include  monarchies as a standalone entity or as a hybrid system of the main three.  Historically prevalent forms of government include monarchy,  aristocracy, timocracy, oligarchy, democracy, theocracy, and tyranny. These forms are not always mutually exclusive, and mixed governments are common. The main aspect of any philosophy of government is how political power is obtained, with the two main forms being electoral contest and hereditary succession.