According to the Constitution (Fifty Second Amendment) Act 1985 as amended in 2003, a legislator attracts disqualification under the Tenth Schedule if I. he voluntarily gives up the membership of the party on whose ticket he was elected. II. he votes or abstains from voting contrary to any direction issued by his political party. III. as a result of split, less than one third of the members formed a new group or party in the house. IV. a member who has been elected as a independent member joins any political party. Select the correct answer using the code given below:

1. Introduction to the Tenth Schedule (Anti-Defection Law) (basic)

Welcome to your first step in understanding the Tenth Schedule of the Indian Constitution, famously known as the Anti-Defection Law. This law was born out of a turbulent era in Indian politics—the 1960s and 70s—marked by the infamous "Aaya Ram, Gaya Ram" culture, where legislators frequently switched parties for personal gain or ministerial berths. To curb this unethical practice and ensure the stability of the government, the 52nd Amendment Act of 1985 was enacted, inserting the Tenth Schedule into our Constitution Indian Polity, M. Laxmikanth, Chapter 85, p. 597.

At its core, the law identifies specific actions that lead to the disqualification of a Member of Parliament (MP) or a State Legislator (MLA/MLC). A member faces disqualification if they voluntarily give up their membership of the political party on whose ticket they were elected. Furthermore, they are at risk if they vote or abstain from voting in the House contrary to the directions (the "whip") issued by their party, unless they have prior permission or their action is forgiven by the party within 15 days Indian Polity, M. Laxmikanth, Chapter 85, p. 598. The law also targets independent members, who are disqualified if they join any political party after their election.

The law has evolved to become stricter over time. Initially, the 1985 Act allowed an exception: if one-third of a party's legislators broke away, it was considered a "split" and did not attract disqualification. However, this was criticized for merely legalizing "bulk defections." Consequently, the 91st Amendment Act of 2003 was passed, which omitted the provision regarding splits entirely Indian Polity, M. Laxmikanth, Chapter 85, p. 597. Today, a split is no longer a valid defense against disqualification.

Sources: Indian Polity, M. Laxmikanth, Chapter 85: Anti-Defection Law, p.597; Indian Polity, M. Laxmikanth, Chapter 85: Anti-Defection Law, p.598

2. Grounds for Disqualification: Party Members & Whips (basic)

To understand why the Tenth Schedule (Anti-Defection Law) exists, we must first understand the concept of political stability. In a parliamentary democracy, the government depends on the majority support of the House. If members could switch parties at will, the government would be in constant peril. To prevent this, the Constitution lays down specific grounds under which a legislator loses their seat for 'defecting.'

For a member belonging to a political party, disqualification is triggered in two primary scenarios:

• Voluntarily giving up membership: This doesn't just mean a formal resignation letter. If a member's conduct (like campaigning for another party) clearly shows they have abandoned their party, they can be disqualified Indian Polity, Laxmikanth, Chapter 85, p.597.
• Defying the 'Whip': If a member votes or abstains from voting against the party’s direction (the Whip) without prior permission, they face disqualification. However, the party has 15 days to 'condone' or forgive the act; if they don't, the member is out Indian Constitution at Work, Class XI NCERT, Chapter 5, p.121.

It is important to distinguish between different types of members. While a party member is bound by their party, Independent members face an absolute rule: they are disqualified if they join any political party after the election. On the other hand, Nominated members (like those appointed by the President to the Rajya Sabha) are given a 'honeymoon period' of six months to join a party; if they join after that window, they lose their seat Indian Polity, Laxmikanth, Chapter 22, p.227.

Today, the law is much stricter. A person disqualified for defection is also barred from holding any remunerative political post, such as a Ministership, for the remainder of that House's term Indian Polity, Laxmikanth, Chapter 85, p.622.

Sources: Indian Polity, Laxmikanth, Anti-Defection Law, p.597; Indian Constitution at Work, Political Science Class XI (NCERT 2025 ed.), LEGISLATURE, p.121; Indian Polity, Laxmikanth, Parliament, p.227; Indian Polity, Laxmikanth, National Commission to Review the Working of the Constitution, p.622

3. Independent and Nominated Members Rules (basic)

To understand the Tenth Schedule (Anti-Defection Law), we must look at how it treats different types of legislators. While the law primarily focuses on party members switching sides, it also has very specific — and different — rules for Independent and Nominated members. The logic here is simple: the law wants to protect the 'original character' of the representative as they were when the voters (or the President/Governor) chose them. Indian Polity, M. Laxmikanth(7th ed.), Chapter 85: Anti-Defection Law, p.597

Independent members are those who contest and win elections without being set up by any political party. Because they were elected specifically as 'independent' of party control, the law is strict: if an independent member joins any political party after their election, they are immediately disqualified from the House. There is no 'grace period' or 'honeymoon phase' for them. Indian Polity, M. Laxmikanth(7th ed.), Chapter 22: Parliament, p.227

Nominated members (like those appointed to the Rajya Sabha for their expertise in art or science) are treated with more flexibility. They are given a six-month window from the date they take their seat in the House. Within these six months, they can choose to join a political party without any penalty. However, if they join a party after the expiry of six months, they lose their seat. The logic is that they should be allowed time to align with a political ideology if they wish, but once they've settled in as a 'non-party' expert for half a year, they cannot change that status later. Indian Polity, M. Laxmikanth(7th ed.), Chapter 85: Anti-Defection Law, p.597

Type of Member	Action leading to Disqualification	Grace Period
Independent	Joins any political party at any time.	None.
Nominated	Joins a political party after a specific duration.	6 months from taking the seat.

Crucially, the power to decide these disqualifications rests with the Presiding Officer (the Speaker for Lok Sabha/Assembly and the Chairman for Rajya Sabha/Council), not the President or Governor. While their word was once final, the Supreme Court ruled in the Kihoto Hollohan case (1992) that this decision is subject to judicial review on grounds of mala fides or perversity. Indian Polity, M. Laxmikanth(7th ed.), Chapter 33: State Legislature, p.338

Sources: Indian Polity, M. Laxmikanth(7th ed.), Chapter 85: Anti-Defection Law, p.597; Indian Polity, M. Laxmikanth(7th ed.), Chapter 22: Parliament, p.227; Indian Polity, M. Laxmikanth(7th ed.), Chapter 33: State Legislature, p.338

4. The Deciding Authority and Judicial Review (intermediate)

In any parliamentary democracy, the independence of the legislature is a core pillar. To maintain this independence, the Tenth Schedule originally designated the Presiding Officer (the Speaker of the Lok Sabha or the Chairman of the Rajya Sabha) as the sole authority to decide on the disqualification of a member. This was a departure from other types of disqualifications, where the President or Governor usually acts after consulting the Election Commission Indian Polity, Parliament, p.233. The logic was simple: the House should be the master of its own proceedings to ensure stability and discipline within party ranks Indian Polity, Anti-Defection Law, p.598. Initially, Paragraph 7 of the Tenth Schedule explicitly stated that the courts had no jurisdiction over these matters—making the Speaker’s decision final and beyond legal challenge. However, this absolute power was challenged in the landmark Kihoto Hollohan vs. Zachillhu (1992) case. The Supreme Court declared Paragraph 7 unconstitutional, ruling that the Speaker, while deciding disqualification cases, functions as a quasi-judicial tribunal. This status means their decisions are subject to judicial review by the High Courts and the Supreme Court on grounds of mala fides (bad faith), perversity, or violation of constitutional mandate Indian Polity, Landmark Judgements and Their Impact, p.631. Today, while the Presiding Officer remains the first point of decision, the judiciary acts as a watchdog. It is important to note that courts generally do not intervene before the Speaker has made a decision; they only review the decision once it is finalized. This ensures that while the Speaker has the primary authority, they cannot act arbitrarily or against the principles of natural justice.

Sources: Indian Polity, Parliament, p.233; Indian Polity, Anti-Defection Law, p.598; Indian Polity, Landmark Judgements and Their Impact, p.631

5. Other Forms of Disqualification: RPA 1951 and Office of Profit (intermediate)

To master the concept of disqualifications, we must look beyond the Tenth Schedule. While 'Defection' is one reason a legislator loses their seat, the Constitution also provides for disqualifications under Article 102 (for Parliament) and Article 191 (for State Legislatures). These articles empower Parliament to create additional grounds through legislation, leading to the landmark Representation of the People Act (RPA), 1951. Laxmikanth, M. Indian Polity, State Legislature, p.338

The Office of Profit is a foundational principle of the separation of powers. It ensures that legislators remain independent of the executive and are not swayed by financial gains from the government. Under the Constitution, a person is disqualified if they hold any office of profit under the Union or State government, unless that office has been specifically exempted by Parliament or the State Legislature. Interestingly, the term 'Office of Profit' is not defined in the Constitution; its meaning has been evolved through judicial interpretations and the Parliament (Prevention of Disqualification) Act, 1959. D. D. Basu, Introduction to the Constitution of India, The Union Executive, p.206

The RPA 1951 adds further ethical and legal layers to eligibility. For instance, a person is disqualified if they are convicted of any offense resulting in imprisonment for two or more years. However, it is vital to remember that preventive detention is not a ground for disqualification. Other grounds include failing to lodge election expenses, having an interest in government contracts, or being dismissed from government service for corruption or disloyalty. Laxmikanth, M. Indian Polity, State Legislature, p.338

The most critical distinction for a UPSC aspirant is who decides the disqualification. While the Presiding Officer (Speaker/Chairman) decides on matters of defection, the President (for MPs) or Governor (for MLAs) decides on RPA and Office of Profit grounds. In these cases, they must obtain the opinion of the Election Commission and act according to that opinion. Laxmikanth, M. Indian Polity, State Legislature, p.338

Feature	RPA 1951 & Office of Profit	Tenth Schedule (Defection)
Deciding Authority	President / Governor	Speaker / Chairman
Consultation	Obligatory advice from Election Commission	Discretionary (subject to Judicial Review)
Key Examples	Criminal conviction (2+ yrs), Govt contracts	Voluntarily giving up party membership

Sources: Laxmikanth, M. Indian Polity, State Legislature, p.338; Introduction to the Constitution of India, D. D. Basu, The Union Executive, p.206; Indian Polity, M. Laxmikanth, World Constitutions, p.757

6. The 91st Amendment Act (2003) and Its Impact (exam-level)

While the 52nd Amendment Act of 1985 introduced the Anti-Defection Law via the Tenth Schedule, it left behind a significant loophole: the "split" provision. Under the original 1985 rules, if one-third of a legislative party's members decided to break away, it was considered a "split" and they were exempt from disqualification. This led to mass defections rather than individual ones. To address this, the 91st Amendment Act of 2003 made a fundamental shift by entirely omitting the exception for splits Indian Polity, M. Laxmikanth, Anti-Defection Law, p.597. Consequently, today, no matter how many members leave a party to form a new faction, they face disqualification unless they merge with another party (which requires a two-thirds majority).

Beyond plugging the "split" loophole, the 91st Amendment introduced structural changes to prevent political opportunism. It mandated that the total number of ministers, including the Prime Minister/Chief Minister, in the Council of Ministers shall not exceed 15% of the total strength of the Lok Sabha or the respective State Legislative Assembly Indian Polity, M. Laxmikanth, Central Council of Ministers, p.213. This was designed to stop the practice of luring defectors with ministerial berths. Furthermore, any member disqualified under the Tenth Schedule is also barred from being appointed as a minister or holding any remunerative political post until their term expires or they are re-elected Indian Polity, M. Laxmikanth, Anti-Defection Law, p.599.

Feature	52nd Amendment (1985)	91st Amendment (2003)
Split Provision	Allowed if 1/3rd of members left.	Deleted (No longer a valid defense).
Merger Provision	Requires 2/3rd of members to agree.	Maintained at 2/3rd requirement.
Council of Ministers	No specific size limit.	Capped at 15% of the lower house.

Sources: Indian Polity, M. Laxmikanth, Anti-Defection Law, p.597; Indian Polity, M. Laxmikanth, Central Council of Ministers, p.213; Indian Polity, M. Laxmikanth, Anti-Defection Law, p.599

7. Exceptions to Defection: The Merger Rule (exam-level)

In our journey through the Tenth Schedule, we’ve seen how strictly the law deals with individual defections. However, the Constitution recognizes that political parties are not static entities; they evolve, fuse, and occasionally redefine their identities. To accommodate these legitimate political shifts, the law provides specific exceptions where a member can leave their original party without losing their seat in the House.

The most significant exception is the Merger Rule. Under the current law, a member is protected from disqualification if their original political party merges with another political party. But there is a catch: the law doesn't just take the party's word for it. A merger is only recognized for the purposes of the Tenth Schedule if at least two-thirds of the members of the legislative party agree to the merger Indian Polity, M. Laxmikanth, Chapter 85, p.597. If this 2/3rd threshold is met, the members who move to the new party (or those who choose to stay and not join the merger) are both protected from disqualification.

It is vital to understand how the law has tightened over time. Historically, there was a "Split" rule that allowed as few as one-third of the members to break away. This led to frequent instability, leading Parliament to intervene with a major constitutional amendment.

Feature	Original Law (52nd Amendment, 1985)	Current Law (91st Amendment, 2003)
Split Exception	Allowed if 1/3rd of members broke away.	Omitted entirely. Splits no longer protect against disqualification.
Merger Exception	Required 2/3rd of members to agree.	Still requires 2/3rd of members to agree.

Another unique exception applies to the Presiding Officers (Speaker, Chairman, etc.). To ensure the neutrality of the office, a member who is elected as the Speaker or Chairman may voluntarily give up the membership of their party and rejoin it after they cease to hold that office, without attracting disqualification Indian Polity, M. Laxmikanth, Chapter 85, p.597.

Sources: Indian Polity, M. Laxmikanth, Chapter 85: Anti-Defection Law, p.597

8. Solving the Original PYQ (exam-level)

This question is a classic test of your ability to integrate the Anti-Defection Law basics with the specific changes brought by constitutional amendments. Having just covered the Tenth Schedule, you know that its primary goal is to maintain political stability by penalizing floor-crossing. The question asks you to identify the grounds for disqualification under the 52nd Amendment Act (1985) while specifically accounting for the changes made by the 91st Amendment Act (2003). This is where your understanding of the evolution of the law becomes critical.

To arrive at the correct answer, evaluate the statements through the lens of current law. Statements I, II, and IV represent the fundamental pillars of the Anti-Defection Law: voluntary resignation from a party, violating a party whip (voting or abstaining contrary to directions), and an independent member joining a political party post-election. These remain valid grounds for disqualification today. However, Statement III is the "trap" statement. While the original 1985 Act provided an exception for a "split" involving 1/3rd of the party members, the 91st Amendment Act of 2003 completely omitted this provision to prevent mass defections. Today, only a merger involving 2/3rds of the party members is recognized as a defense.

UPSC frequently uses "repealed provisions" to test if a candidate has updated their knowledge. Option (D) is a common pitfall because Statement III used to be part of the law, but because the question explicitly mentions the 2003 amendment, Statement III becomes legally irrelevant. By eliminating the "split" exception, you are left with the correct answer (B), which includes only the active grounds for disqualification: I, II, and IV. This level of precision is exactly what Indian Polity, M. Laxmikanth (7th ed.) emphasizes when discussing the 91st Amendment's impact on group defections.