AAP Rajya Sabha MPs' Defection to BJP Tests Anti-Defection Law's Merger Clause

Indian Express - Explained · 30 Apr 2026 · 2 min read
Prelims · Polity Mains · GS2 Polity and constitution High relevance

Seven AAP Rajya Sabha MPs joined BJP, invoking the two-thirds merger clause under the Tenth Schedule to avoid disqualification, raising critical questions about the robustness of anti-defection laws and legislative ethics.

Key points

Tenth Schedule of the Indian Constitution, also known as the Anti-Defection Law, was invoked by seven AAP Rajya Sabha MPs to merge with BJP, avoiding disqualification as they constitute more than two-thirds of AAP's strength in the House.

Rajya Sabha Chairman holds the authority to decide on disqualification petitions; precedent suggests that if two-thirds of a party's members merge with another party, the Chairman may approve it as a legitimate merger.

Paragraph 4 of the Tenth Schedule allows members to avoid disqualification if their original party merges with another and they claim membership of the new party, provided the merger is approved by the presiding officer.

91st Constitutional Amendment Act 2003 strengthened the Anti-Defection Law by requiring at least two-thirds of a party's members to merge with another party to avoid disqualification, replacing the earlier one-third split provision.

Judicial review of the presiding officer's decision can only occur after the ruling is made, creating potential delays that allow defecting members to retain their seats and influence legislative outcomes.

[GS2-Governance] The defection highlights systemic loopholes in the Anti-Defection Law, undermining its intent to curb political opportunism and stabilize governments, a recurring issue in Indian polity.

NDA's effective strength in Rajya Sabha could rise to 148 if the defecting MPs' votes are counted, significantly impacting legislative dynamics and the passage of key bills.

Way Forward: Amend the Tenth Schedule to impose strict timelines for presiding officers' decisions, clarify the definition of 'merger' to prevent misuse, and introduce penalties for delaying disqualification petitions to uphold legislative integrity.

Key terms

Tenth Schedule

The Tenth Schedule of the Indian Constitution, introduced by the 52nd Amendment in 1985, outlines the Anti-Defection Law to prevent elected members from switching parties arbitrarily. It mandates disqualification for defection unless two-thirds of a party's members merge with another party, aiming to ensure political stability and curb unethical political practices.

91st Constitutional Amendment Act 2003

This amendment strengthened the Anti-Defection Law by replacing the one-third split provision with a stricter two-thirds merger requirement to avoid disqualification. It also capped the size of ministries to 15% of the legislature's strength to prevent excessive political appointments, enhancing governance efficiency.

Rajya Sabha Chairman

The Vice-President of India serves as the ex-officio Chairman of the Rajya Sabha, wielding authority over disqualification petitions under the Tenth Schedule. The Chairman's role is critical in interpreting anti-defection provisions, with precedents like Venkaiah Naidu's rulings influencing future decisions.

Judicial Review

Judicial review allows courts to examine the legality of decisions made by presiding officers under the Tenth Schedule, but only after the ruling is delivered. This delay can be exploited to prolong defectors' legislative influence, highlighting a gap in the law's enforcement mechanism.