Lok Sabha Speaker to Weigh TMC Factions Amidst Merger Claims and Anti-Defection Debate

New Delhi – The political landscape in India's Lok Sabha is poised for significant changes as Speaker Om Birla prepares to adjudicate a complex dispute involving two factions of the Trinamool Congress (TMC). The Speaker will consult both the defected TMC Members of Parliament (MPs) and the official party leadership under Mamata Banerjee before rendering a decision on the recognition of a breakaway group. This high-stakes parliamentary showdown, expected before the Monsoon Session in July, hinges on interpretations of India's stringent anti-defection law.

At the heart of the controversy is a move by approximately 20 rebel TMC MPs who, on Sunday, June 14, 2026, met Speaker Om Birla and formally declared their decision to merge with the Nationalist Citizens Party of India (NCPI), a relatively obscure Tripura-based political entity. This group asserts that their strength constitutes two-thirds of the TMC's current 28 Lok Sabha MPs, thereby fulfilling the numerical requirement under the Tenth Schedule of the Constitution to avoid disqualification for defection. The rebel faction's leader, Sudip Bandyopadhyay, indicated that while the immediate merger is with the NCPI, they intend to seek recognition as the 'real' Trinamool Congress in July, leveraging their claimed two-thirds majority.

However, the official Trinamool Congress leadership has strongly contested these claims. Abhishek Banerjee, the TMC's National General Secretary, has written to Speaker Birla, unequivocally stating that the TMC is a 'single, indivisible political party'. In his letter, delivered by TMC MPs Sagarika Ghose and Kirti Azad, Banerjee urged the Speaker not to grant any recognition, status, or facilities to any purported separate group. He emphasized that Indian law does not countenance the 'splintering of a political party into competing groups' and that the legislative party in the Lok Sabha derives its existence from the political party itself.

Crucially, Banerjee's argument draws upon the Supreme Court's 2023 Constitution Bench judgment concerning the Shiv Sena split case. He contended that the legal defense of a 'split' no longer holds under the Tenth Schedule, and for a merger to be legitimate under the anti-defection law, it must involve the merger of the original political party, not merely its legislators. This interpretation aligns with the views of constitutional experts like former Lok Sabha Secretary-General P.D.T. Achary, who has consistently stated that the Tenth Schedule mandates the merger of entire political parties, not just their parliamentary or legislative wings. According to Achary, if MPs or MLAs alone merge, it constitutes defection and not a legitimate merger.

The Speaker's office has acknowledged the gravity of the situation, sending an email to the Mamata Banerjee-led faction to solicit their perspective before making a final determination. Sources suggest that Speaker Birla may also seek legal opinion to ensure that any decision rendered can withstand potential judicial scrutiny, especially given the complexities of the anti-defection law. This is particularly pertinent because legal opinions are divided on whether the rebel MPs' actions constitute a valid merger or fall within the ambit of defection, which could lead to their disqualification.

The dispute also highlights the nuanced role of the Lok Sabha Speaker, who, under the Tenth Schedule, acts as a tribunal to decide on matters of disqualification arising from defection. However, the question of which faction represents the 'real' political party is traditionally determined by the Election Commission of India under Paragraph 15 of the Symbols Order, not by the Speaker. The current political climate in West Bengal has seen similar factionalism at the state level, with a large group of TMC MLAs having already broken away in the Assembly, a decision now challenged in the Calcutta High Court.

The outcome of Speaker Birla's decision will have significant ramifications, potentially reducing the TMC's parliamentary strength and correspondingly boosting the numbers for the ruling National Democratic Alliance (NDA), which the defecting MPs have pledged to support. The process is closely watched, as it will not only shape the immediate political dynamics in the Lok Sabha but also set precedents for future interpretations and applications of India's anti-defection legislation.