The leader or chairperson of a parliamentary group holds an influential political post in a parliamentary system with strong party discipline. Parliamentary group and parliamentary party are terms used to refer to the representation of a Political party or Electoral fusion of parties in a Party discipline is the ability of the Parliamentary group of a Political party to get its members to support the policies of the party leadership When the party is in opposition or a minor partner in a governing coalition, he or she is often the political leader of a party and often the main media contact. A coalition is an alliance among individuals during which they cooperate in joint action, each in their own Self-interest. A politician (from Greek " Polis " is an individual who is involved in influencing public decision making through the influence of Politics or a person