Merger of AAP MPs with BJP before party's merger 'unconstitutional': Kapil Sibal

Seven Rajya Sabha members of the Aam Aadmi Party, led by Raghav Chadha, announced their merger with the Bharatiya Janata Party on April 24, 2026, claiming th...

What Happened

Seven Rajya Sabha members of the Aam Aadmi Party, led by Raghav Chadha, announced their merger with the Bharatiya Janata Party on April 24, 2026, claiming the move was protected under the merger exception of the Tenth Schedule.
The legislators argued that they constituted more than two-thirds of the AAP's ten-member Rajya Sabha group, satisfying the numerical threshold under Paragraph 4 of the Tenth Schedule.
The AAP challenged the move as unconstitutional, announcing it would petition the Rajya Sabha Chairman seeking disqualification of the seven members, arguing that no valid merger had occurred at the party organisation level — only at the legislative level.
Legal experts and independent constitutional commentators have argued that because the AAP as a political party has not formally merged with the BJP, the legislators cannot invoke Paragraph 4's protection — making this potentially the first major post-91st Amendment test of the merger exception in the Rajya Sabha.
The Rajya Sabha Chairman holds adjudicatory authority over disqualification petitions concerning Upper House members; the matter is expected to be contested through the constitutional adjudication process.

Static Topic Bridges

The Party Merger vs. Legislature Party Merger Distinction in the Tenth Schedule

The Tenth Schedule draws a critical distinction between the "original political party" (the party organisation, including its constitution, national executive, and elected leadership) and the "legislature party" (the group of elected members of that party sitting in a particular House of Parliament or a state legislature).

Paragraph 1(b) defines "original political party" as the political party to which the member belonged when originally elected.
Paragraph 1(c) defines "legislature party" as the group formed by all the members of that political party in a particular House.
Paragraph 4 stipulates that a merger is constitutionally valid only when the "original political party" merges with another party — not merely when legislators from that party collectively decide to join another.
The numerical requirement — two-thirds of the legislature party's strength — is a necessary but not sufficient condition; the party-level merger is equally required.

Connection to this news: The seven AAP MPs satisfied the numerical threshold (7 of 10, i.e., 70%) but did so without any corresponding merger of AAP as a party into the BJP. Constitutional scholars argue that Paragraph 4 requires both conditions simultaneously — making the claim of a valid merger constitutionally fragile.

The Rajya Sabha Chairman's Adjudicatory Role — Powers and Limitations

Under the Tenth Schedule, the Chairman of the Rajya Sabha is the sole adjudicator of disqualification petitions concerning members of the Upper House. This institutional arrangement has faced sustained criticism for creating a potential conflict of interest, since the Chairman is a political figure (the Vice President of India).

Paragraph 6(1) of the Tenth Schedule vests adjudicatory power in the Chairman (Rajya Sabha) or Speaker (Lok Sabha/state assemblies).
Decisions are quasi-judicial in nature and are subject to judicial review by superior courts, per the Kihoto Hollohan (1992) ruling.
However, the Supreme Court in Kihoto Hollohan held that courts cannot intervene by way of interim orders before the Presiding Officer decides.
A persistent concern is the delay in deciding petitions — the Constitution fixes no time limit for disposal, allowing petitions to linger without resolution.
The Law Commission's 170th Report (1999) and the Election Commission have recommended that disqualification decisions be transferred to the Election Commission, to ensure neutrality.

Connection to this news: The AAP's petition will be filed before the Rajya Sabha Chairman. The absence of a statutory time limit for the Chairman to decide means the petition could remain pending — potentially for the entire remaining term of the members concerned — raising concerns about the effectiveness of the anti-defection regime as a deterrent.

Constitutional Validity of Pre-Party-Merger Legislative Mergers — The Legal Debate

The question of whether a legislature party can merge with another party before the political party itself merges is a grey area that has produced conflicting interpretations at High Court and Supreme Court levels.

One High Court judgment has held such legislative mergers to be valid under the Tenth Schedule, relying on the literal two-thirds numerical threshold.
Constitutional text purists and several scholars argue this interpretation subverts the purpose of the provision — Parliament specifically used "original political party" (not "legislature party") in Paragraph 4 precisely to ensure that mergers are genuine organisational events, not tactical legislative manoeuvres.
The Supreme Court has not yet authoritatively settled the precise scope of Paragraph 4 in such a scenario.
Senior legal voices have argued the matter ultimately requires Supreme Court resolution, as conflicting lower-court precedents create uncertainty.

Connection to this news: The AAP-BJP Rajya Sabha merger places this unresolved constitutional question squarely before the adjudicatory system again. If the Chairman accepts the merger claim, AAP may escalate to the Supreme Court, potentially generating a definitive ruling on the scope of Paragraph 4.

Significance of Anti-Defection Law for Rajya Sabha — Special Considerations

The Rajya Sabha represents states and Union Territories in Parliament's Upper House. Members are elected by state legislative assemblies through proportional representation with single transferable vote, making their composition a reflection of state-level political outcomes. Anti-defection discipline in the Rajya Sabha therefore has implications for the balance of power between the Union government and legislative opinion in states.

Rajya Sabha members serve six-year terms and are elected by elected MLAs of states.
The whip system applies to Rajya Sabha members; voting against a party whip without exemption invites disqualification.
There is no provision in the Tenth Schedule that carves out the Rajya Sabha from the merger or disqualification regime — it applies equally to both Houses.
Critics argue Rajya Sabha is meant to be a deliberative body with greater legislative independence; the strict whip system is seen by some as incompatible with the original role of the Upper House.

Connection to this news: Senior legal commentary has highlighted that the Tenth Schedule provides no special exemption for Rajya Sabha members, contrary to arguments raised in favour of the merging MPs. The view that "anti-defection law does not apply to the Rajya Sabha" has been explicitly rejected by constitutional experts in the current controversy.

Key Facts & Data

Seven of AAP's ten Rajya Sabha members announced merger with BJP on April 24, 2026 — 70% of the legislative group.
The numerical threshold under Paragraph 4 of the Tenth Schedule: two-thirds (at least 67%) of the legislature party.
Constitutional requirement for a valid merger: the "original political party" (not just the legislature party) must merge.
Adjudicating authority for Rajya Sabha disqualification: the Rajya Sabha Chairman.
AAP announced petition for disqualification of all seven members; the party itself has not merged with the BJP.
No statutory time limit exists under the Tenth Schedule for the Chairman to decide disqualification petitions.
Key case law: Kihoto Hollohan v. Zachillhu (1992) — Supreme Court upheld constitutional validity of Tenth Schedule and Speaker/Chairman's adjudicatory role, subject to judicial review post-decision.
The 91st Amendment (2003) removed the "split" provision (Paragraph 3); the "merger" provision (Paragraph 4) is the only surviving exception to disqualification.
Law Commission's 170th Report (1999) recommended transferring disqualification decisions from the Presiding Officer to the Election Commission.