Anti-Defection Law and Merger Clause Constitutional Validity

• 27 Apr 2026

For Prelims:  Tenth Schedule, Judicial review, Supreme Court,  Speaker , Members of Legislative Assembly

For Mains: Anti-Defection Law: Evolution, provisions, and challenges, Role of the Speaker and issues of neutrality, Judicial review and landmark judgments on defection

Source:TH

Why in News? 

Seven former MPs of the Aam Aadmi Party joined the Bharatiya Janata Party and have cited the “merger” provision under the anti-defection law to avoid disqualification.

• This has raised constitutional questions on whether a legislature party alone can claim a valid merger without the involvement of the original political party.

Summary

• The Anti-Defection Law aims to ensure political stability, but the misuse of the “merger” clause has raised serious constitutional concerns about its effectiveness.
• Key issues include loopholes enabling mass defections, Speaker’s bias, delayed decisions, and the weakening of legislative independence and democracy.

What is the Anti-Defection Law?

• About: The Anti-Defection Law is a set of rules in the Indian Constitution designed to prevent elected politicians (Members of Parliament or State Legislative Assemblies) from switching political parties for personal gain or political maneuvering.
  • It was introduced to bring stability to the parliamentary system and stop the infamous "Aaya Ram, Gaya Ram" culture of the 1960s and 70s, where legislators frequently changed sides, causing governments to collapse.
    • Between 1967 and 1972, nearly 2,000 cases of defection occurred, with about 50% of legislators switching parties, some multiple times. 
  • It was introduced to bring stability to the parliamentary system and stop the infamous "Aaya Ram, Gaya Ram" culture of the 1960s and 70s, where legislators frequently changed sides, causing governments to collapse.
  • It was added to the Constitution by the 52nd Amendment Act in 1985, which created the Tenth Schedule.
  • The law was strengthened by the 91st Constitutional Amendment Act, 2003, which omitted the provision related to a "split" (where 1/3rd members could defect) and retained only the "merger" provision. 
• Grounds for Disqualification:
  • Voluntarily giving up membership: If an elected member formally resigns from the political party on whose ticket they were elected. 
    • The Supreme Court has ruled that "voluntarily giving up" can be inferred from a member's conduct, even without a formal resignation.
  • Defying the Party Whip: If a member votes, or abstains from voting, in the House contrary to the directions issued by their political party, without obtaining prior permission.
  • Independent Members: If a member elected as an "Independent" candidate joins any political party after the election.
  • Nominated Members: If a nominated member (who is not elected but appointed) joins a political party after six months of taking their seat in the House.
• Exceptions to Disqualification: 
  • The 'Merger' Clause: If a political party merges with another party, and at least two-thirds of the legislators of that party agree to the merger, they are protected from disqualification.
    • To claim protection under the 'Merger' Clause of the Anti-Defection Law (Paragraph 4 of the Tenth Schedule), a specific "Twin Test" must be strictly satisfied. It is not enough for legislators to simply switch sides in large numbers.
      • Test One (The Origin): There must be a formal merger of the original political party (the broader organizational entity) with another political party.
      • Test Two (The Numbers): Following that party-level merger, at least two-thirds of the members of its legislature party (the elected MPs or MLAs in the House) must agree to and adopt the merger.
      • The act of merging must originate from the political party itself. A group of elected legislators cannot independently engineer a merger solely to ward off anti-defection proceedings.
• Presiding Officers: If a member is elected as the Speaker or Chairman of the House, they can resign from their political party to maintain neutrality in their role, and they will not be disqualified. 
  • They can rejoin their party after their tenure ends.
• Role of the Presiding Officer: The power to decide on questions of defection lies exclusively with the Presiding Officer of the House- the Speaker in the Lok Sabha/Legislative Assemblies, and the Chairman in the Rajya Sabha/Legislative Councils.

Judicial Pronouncements Regarding  Anti-Defection

• Padi Kaushik Reddy v. State of Telangana (2025): SC urged Parliamentary reforms to ensure timely and fair adjudication of defection cases and re-examine the Speaker’s role. 
• Subhash Desai vs Principal Secretary Governor of Maharashtra (2023): SC held that the original political party and the legislature party are separate entities, and clarified that a legislature party can claim protection from disqualification only when a merger is initiated by the original political party, not on its own.
• Keisham Meghachandra Singh vs The Hon’ble Speaker, Manipur Legislative Assembly (2020): Speaker must decide disqualification cases within 3 months; delays defeat the Tenth Schedule. 
  • SC also suggested an independent tribunal to ensure neutrality and speed. 
• Ravi S. Naik v. Union of India (1994): Speaker must act as a neutral adjudicator, an MP/MLA can be disqualified without formally resigning if conduct shows defection. 
• Kihoto Hollohan v. Zachillhu (1992): Speaker’s decisions under the Anti-Defection Law are subject to judicial review in cases of mala fide intent, procedural irregularity, or constitutional violation. 

What are the Concerns Regarding the Anti-Defection?

• Merger Loophole (Wholesale Defection): The provision allowing a two-thirds majority to claim a “merger” has effectively enabled large-scale defections without disqualification. 
  • This creates a situation where individual defection is punished, but group defection is protected, weakening the original intent of ensuring political stability.
  • In practice, the merger provision has often been interpreted based on numerical strength within the legislature, with two-thirds support treated as sufficient even without a formal party merger, reducing it to a numbers game and undermining the core objective of the Tenth Schedule.
• Partisan Role of the Presiding Officer: The authority to decide disqualification lies with the Speaker/Chairman, who often belongs to a political party. 
  • This raises concerns of bias, as decisions may be influenced by political considerations rather than constitutional principles.
• Procedural Ambiguity in Adjudication: The Speaker/Chairman must decide whether the “merger” meets Paragraph 4 or amounts to defection; until then, MPs are deemed to belong to their original party, creating a situation where they may support another party while still being bound by their original party’s whip, risking disqualification. 
• No Fixed Time Limit for Decisions: The law does not specify a strict timeline for deciding disqualification cases. 
  • As a result, proceedings are often delayed, allowing defecting legislators to continue in office or even complete their tenure without facing consequences.
• Curtailment of Free Speech and Dissent: The anti-defection law enforces strict party discipline through whips, even on ordinary legislative matters. 
  • This limits the ability of elected representatives to express independent views or vote according to their conscience.
• Weakening of Representative Democracy: The law shifts the accountability of legislators from their voters to their party leadership. 
  • This undermines the core principle that elected representatives should act in the interest of their constituents. 
• Judicial Ambiguity: The interpretation of Paragraph 4 remains unsettled, as the Bombay High Court (2022) upheld a “merger” based solely on two-thirds of legislators joining another party, without requiring a merger of the original political party.
  • This view, now challenged in Girish Chodankar vs The Speaker Goa Legislative Assembly (2026), treats Paragraph 4(2) as a standalone provision and is criticised for enabling defections. 

What Measures can be Implemented to Fortify the  Anti-Defection Law?

• Establishing an Independent Adjudicating Authority: The Dinesh Goswami Committee on Electoral Reforms (1990) and the Election Commission of India (ECI) have recommended that disqualification petitions should be decided by the President (for MPs) or the Governor (for MLAs) based on the binding advice of the ECI.
• Permanent Tribunal: The Supreme Court in Keisham Meghachandra v. the Hon'ble Speaker Manipur (2020) has suggested the creation of a permanent, independent tribunal headed by a retired Supreme Court judge or a retired Chief Justice of a High Court to exclusively hear defection cases.
• Mandating a Strict Time-Frame for Decisions: Parliament should amend the Tenth Schedule to mandate that the adjudicating authority must decide on a disqualification petition within a fixed period, ideally three months, as suggested by the Supreme Court in the Keisham Meghachandra Singh (2020) judgment.
• Restricting the Application of the Party Whip: As recommended by the Law Commission of India (170th Report), the issuance of a whip should be restricted only to motions where the survival of the government is at stake such as No-Confidence Motions, Confidence Motions, and the passing of Money Bills or the Budget. 
  • For all other legislation, members should be free to vote according to their conscience or their constituents' interests without the threat of disqualification.
• Re-evaluating 'Merger' Clause: The law must explicitly clarify that a "merger" requires the primary political party (the organizational wing) to merge first, and the two-thirds agreement of the legislature party is merely a secondary condition. 
  • A legislature party should not be allowed to execute a merger independently.
• Closing the "Resignation" Loophole: To stop the growing trend of legislators resigning to topple governments and subsequently fighting by-elections on a rival party's ticket, stricter electoral penalties are required.
  • A legislator who resigns from their seat should be barred from contesting any by-election for the remainder of the duration of that specific Assembly or Parliament.
• Strengthening Inner-Party Democracy: Defections are often a symptom of highly centralized and undemocratic party structures.
  • Enacting laws that mandate regular, transparent, and democratic internal elections within political parties can reduce the dictatorial control of party high commands, giving legislators a legitimate platform to voice dissent without needing to defect.

Conclusion

The merger clause was intended to safeguard democratic dissent, but its growing misuse risks turning it into a tool for political opportunism. Continued judicial scrutiny will be key to restoring a balance between legislative freedom and party stability.

Drishti Mains Question:

Q.  Discuss the ‘merger’ clause under the Tenth Schedule. How has its interpretation evolved through judicial pronouncements?

Frequently Asked Questions (FAQs) 

1. What is the Anti-Defection Law?
   It is part of the Tenth Schedule (52nd Amendment, 1985) aimed at preventing political defections and ensuring stability in legislatures.
2. What is the ‘merger’ provision under the Anti-Defection Law?
   It allows exemption from disqualification if the original political party merges with another and at least two-thirds of legislators support it.
3. What is the ‘twin test’ for a valid merger?
   It requires (i) merger of the original political party and (ii) support of two-thirds of the legislature party.
4. What did the Supreme Court clarify in the Subhash Desai case (2023)?
   It held that the original political party and legislature party are distinct, and legislators cannot claim merger independently.
5. What are key concerns with the Anti-Defection Law?
   Major issues include misuse of the merger clause, Speaker’s bias, delays in decisions, and restrictions on free speech.

UPSC Civil Services Examination, Previous Year Questions (PYQ) 

Prelims:

Q. Which one of the following Schedules of the Constitution of India contains provisions regarding anti-defection? (2014)

(a) Second Schedule
(b) Fifth Schedule
(c) Eighth Schedule 
(d) Tenth Schedule 

Ans: (d) 

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Mains: 

Q. The role of individual MPs (Members of Parliament) has diminished over the years and as a result healthy constructive debates on policy issues are not usually witnessed. How far can this be attributed to the anti-defection law which was legislated but with a different intention?(2013)