Parliamentary System

The parliamentary system of government offers several advantages. Primarily, it fosters cooperation and a harmonious relationship between the legislative and executive branches of government, as the executive is a part of the legislature and both are interdependent. This structure inherently promotes a responsible government, as ministers are accountable to the Parliament for their actions and decisions. The Parliament uses various mechanisms like question hour and no-confidence motions to exercise control over the executive. Furthermore, this system helps prevent despotism by distributing executive authority among a group of individuals (the council of ministers) rather than concentrating it in a single person. The executive's accountability to Parliament, including removal through a no-confidence motion, acts as a check on dictatorial tendencies. Another merit is the provision for a ready alternative government; if the ruling party loses its majority, the Head of the State can invite the opposition to form a new government without necessitating fresh elections. Lastly, the parliamentary system allows for wide representation, as the executive, being composed of ministers who are people's representatives, can include individuals from diverse sections and regions of society, a factor the Prime Minister can consider when selecting ministers.

The parliamentary system, while offering significant advantages in ensuring democratic accountability, suffers from several inherent weaknesses that undermine governmental stability and efficiency. These demerits arise primarily from the dependence of the executive on the legislature's confidence, the absence of separation between executive and legislative powers, and the constraints imposed on ministerial selection. The uncertainty of governmental tenure, coupled with the dominance of the ruling party when it commands an absolute majority, can lead to frequent policy reversals and ineffective administration. Additionally, the system's reliance on legislators for executive positions, rather than on subject-matter experts, diminishes administrative competence. These structural limitations have been acknowledged as fundamental trade-offs inherent in choosing parliamentary over presidential governance, particularly in the context of India's adoption of this model despite debates about its suitability for a complex plural society.

The presidential system of government is characterized by the constitutional independence of the executive from the legislature. Unlike the parliamentary system, the executive in a presidential system is not responsible to the legislature for its policies and acts, and maintains an independent term of office. The presidential system is also known as a non-responsible, non-parliamentary, or fixed executive system of government, and is prevalent in countries such as the USA, Brazil, Russia, and Sri Lanka. In a presidential system, the head of state and head of government roles are combined in a single individual—the President. The President exercises considerable independent authority and governs with the assistance of a cabinet or advisory body. A fundamental distinction of the presidential system is the doctrine of separation of powers, which keeps the legislative, executive, and judicial branches as independent and separate organs of government.

In a parliamentary system of government, the principle of majority party rule dictates that the political party which secures the majority of seats in the lower house of the Parliament (the Lok Sabha in India) has the right to form the government. The President then appoints the leader of this majority party as the Prime Minister. Following this, the President appoints other ministers based on the Prime Minister's advice. Should no single party achieve a clear majority, the President may invite a coalition of parties to form the government. This mechanism ensures that the executive government enjoys the confidence of the legislative majority, a fundamental characteristic of the parliamentary system.

Collective responsibility is a fundamental principle of parliamentary government in India. It mandates that ministers are collectively accountable to the Parliament, and specifically to the Lok Sabha, for their policies and actions as a team. This principle signifies that all ministers act in unison; they "swim and sink together." If a vote of no confidence is passed against the council of ministers in the Lok Sabha, it leads to the removal of the entire ministry, including the Prime Minister. This mechanism ensures that the government maintains the confidence of the legislative body.

While India's parliamentary system is largely inspired by the British model, it has developed distinct characteristics. A fundamental difference lies in the head of state; India has an elected President, establishing a republican system, whereas Britain retains a hereditary monarch. Furthermore, the Indian Parliament does not possess the same degree of sovereignty as its British counterpart, owing to a written Constitution, federal structure, judicial review, and fundamental rights. In terms of ministerial appointments, the British Prime Minister typically must be a member of the Lower House, while in India, the Prime Minister can be from either House of Parliament. India also allows non-members of Parliament to be appointed as ministers for up to six months, a practice not prevalent in Britain. The concept of legal responsibility of ministers, where they countersign official acts of the Head of State, exists in Britain but not in India. Lastly, the unique institution of a "shadow cabinet" formed by the opposition party is a feature of the British system absent in India.