A political system is a system

System

System is a set of interacting or interdependent components forming an integrated whole....

 of politics

Politics

Politics is a process by which groups of people make collective decisions. The term is generally applied to the art or science of running governmental or state affairs, including behavior within civil governments, but also applies to institutions, fields, and special interest groups such as the...

 and government

Government

Government refers to the legislators, administrators, and arbitrators in the administrative bureaucracy who control a state at a given time, and to the system of government by which they are organized...

. It is usually compared to the legal system, economic system

Economic system

An economic system is the combination of the various agencies, entities that provide the economic structure that defines the social community. These agencies are joined by lines of trade and exchange along which goods, money etc. are continuously flowing. An example of such a system for a closed...

, cultural system

Cultural system

A cultural system may be defined as the interaction of different elements of culture. While a cultural system is quite different from a social system, sometimes both systems together are referred to as the sociocultural system....

, and other social systems. However, this is a very simplified view of a much more complex system of categories involving the views: who should have authority, how religious questions should be handled, and what the government's influence on its people and economy should be.
There are several definitions of "political system":

• A political system is a complete set of institution
  Institution
  An institution is any structure or mechanism of social order and cooperation governing the behavior of a set of individuals within a given human community...
  
  s, interest groups (such as political parties
  Political party
  A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...
  
  , trade union
  Trade union
  A trade union, trades union or labor union is an organization of workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members and negotiates labour contracts with...
  
  s, lobby groups), the relationships between those institutions and the political norms and rules that govern their functions (constitution
  Constitution
  A constitution is a set of fundamental principles or established precedents according to which a state or other organization is governed. These rules together make up, i.e. constitute, what the entity is...
  
  , election
  Election
  An election is a formal decision-making process by which a population chooses an individual to hold public office. Elections have been the usual mechanism by which modern representative democracy operates since the 17th century. Elections may fill offices in the legislature, sometimes in the...
  
   law
  Law
  Law is a system of rules and guidelines which are enforced through social institutions to govern behavior, wherever possible. It shapes politics, economics and society in numerous ways and serves as a social mediator of relations between people. Contract law regulates everything from buying a bus...
  
  ).
• A political system is composed of the members of a social organization (group) who are in power.
• A political system is a system that necessarily has two properties: a set of interdependent
  Interdependence
  Interdependence is a relation between its members such that each is mutually dependent on the others. This concept differs from a simple dependence relation, which implies that one member of the relationship can function or survive apart from the other....
  
   components and boundaries toward the environment
  Natural environment
  The natural environment encompasses all living and non-living things occurring naturally on Earth or some region thereof. It is an environment that encompasses the interaction of all living species....
  
   with which it interacts
  Interaction
  Interaction is a kind of action that occurs as two or more objects have an effect upon one another. The idea of a two-way effect is essential in the concept of interaction, as opposed to a one-way causal effect...
  
  .
• A political system is a concept in which theoretically regarded as a way of the government makes a policy and also to make them more organized in their administration.
• A political system is one that ensures the maintaining of order and sanity in the society and at the same time makes it possible for some other institutions to also have their grievances and complaints put across in the course of social existence.

Commonalities between political systems:

• Interdependent parts
  • Citizen
    Citizenship
    Citizenship is the state of being a citizen of a particular social, political, national, or human resource community. Citizenship status, under social contract theory, carries with it both rights and responsibilities...
    
    s Culture
  • Government
• Boundaries
  • Citizenship
  • Territory
  • Property

The following are examples of political systems, some of which are typically mutually exclusive (e.g.