TMC Faces Dual Rebellion: Assembly Split, Parliament Defection Fears Mount for Mamata

The Trinamool Congress (TMC), led by Mamata Banerjee, is currently embroiled in a significant internal crisis, facing what has been widely termed a 'double whammy' of rebellion within both the West Bengal Legislative Assembly and a looming threat of defections in the national Parliament. This political turmoil marks one of the most severe challenges to Banerjee's leadership since the party's inception. At the heart of the crisis is a major split within the West Bengal Assembly. Expelled TMC MLA Ritabrata Banerjee has successfully rallied a substantial number of legislators, with reports indicating support from 58 to 59 MLAs, to form a separate legislative group. This faction formally staked claim to and secured the position of Leader of Opposition (LoP) in the state assembly, a move recognized by the Speaker. This development is particularly damaging as it signifies a clear erosion of the TMC's legislative control and its inability to contain internal dissent at the state level. The rebel group asserts its continued affiliation with the 'real Trinamool Congress' under Mamata Banerjee's symbolic leadership, while actively challenging the authority of Abhishek Banerjee, the party's National General Secretary. Following this unprecedented split in the Assembly, attention has now sharply focused on the TMC's parliamentary contingent in Delhi. Multiple credible news outlets, including NDTV, India Today, The Times of India, and Hindustan Times, are reporting a strong 'buzz' and growing concern over potential defections among TMC Members of Parliament (MPs). Sources indicate that a significant number of TMC MPs, estimated to be between 20 and 23 out of the party's total of 41 (28 in Lok Sabha and 13 in Rajya Sabha), are reportedly in active communication with either the rebel MLA faction or directly with the Bharatiya Janata Party (BJP). Some reports suggest that senior TMC MPs have been tasked with outreach to their colleagues to prevent further fragmentation, highlighting the party's apprehension about the 'Assembly rebellion' spilling over into Parliament. While rebel leader Ritabrata Banerjee stated on June 5, 2026, that he had not directly spoken to any MPs in the preceding seven days, he expressed confidence that the rebel faction's support base would continue to expand, implying indirect or future parliamentary alignment. In response to the escalating crisis, Mamata Banerjee has initiated a series of countermeasures. On June 5, 2026, the TMC announced a significant organizational reshuffle. Derek O'Brien and Dola Sen were appointed as National Joint Secretaries to assist Abhishek Banerjee, while Chandrima Bhattacharya took over as the new West Bengal State President. This restructuring, which also involved the dissolution of all state-level party committees and frontal organizations, is widely interpreted as an attempt by Mamata Banerjee to reassert control, dilute concentrated authority, and placate disgruntled party members. Furthermore, the TMC leadership, particularly MP Kalyan Banerjee, has declared its intention to challenge the Speaker's decision regarding Ritabrata Banerjee's LoP appointment in the Calcutta High Court on June 8, 2026, terming it 'illegal'. The severity of the internal rift was further underscored by the notably low attendance at a crucial party meeting convened by Mamata Banerjee at her residence on June 5, 2026. Only 8 of the 80 TMC MLAs and 6 MPs were reported to be present, according to The Times of India. Other accounts suggest similarly poor attendance at earlier meetings, with figures as low as 19 out of 80 MLAs at a May 31 meeting. This indicates a widespread disillusionment and a significant challenge for Mamata Banerjee to 'hold the flock together'. The dissent appears to be partly fueled by frustration with Abhishek Banerjee's leadership style and perceived centralization of power within a 'family controlled' decision-making structure. The political developments in West Bengal are drawing comparisons to similar power struggles seen in other states, particularly the 'Maharashtra crisis', where party splits led to significant shifts in political dynamics and control over party symbols. The ongoing events suggest that Mamata Banerjee, who founded the TMC in 1998, is facing an unprecedented internal challenge, jeopardizing not only her state-level dominance but also the party's national standing within the opposition INDIA bloc.

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