Political parties, the president cabinet, and national nominating conventions are considered examples of

Answer: The unwritten constitution.

Explanation:

The unwritten constitution refers to the rules followed by our government that are acknowledged as a vital component of the system but they are not really in the Constitution. These are practices that have been done in a certain way for so long that many people think they are laws.

For example, the formation of a cabinet to advise the president is a precedent set by George Washington, neither required nor suggested by the Constitution.

Political parties, the president cabinet, and national nominating conventions are considered examples of Unwritten Constitution.