Unitary government, the fourth majoritarian feature

In a majoritarian system, all government power is held by the central government in the state's capital.  The central government may create lower levels of government and give them more or less powers, but the central government can also remove those powers and eliminate the lower levels of government at will.     

To recap, a majoritarian form of government includes unicameralism and a fusion of legislative and executive power and parliamentary sovereignty and a unitary government.

A nonmajoritarian alternative to a unitary government is a federal system, which is a Constitutional provision for two or more levels of government, each with their own powers and responsibilities.  Federalism assumes a big-C Constitution because there has to be a fundamental document which articulates those powers which will be exercised by the national government and those which will be exercised by subordinate governments.

And, finally, on to the fifth majoritarian feature, SMDP as the electoral law...