A faction of Trinamool Congress (TMC) MPs is rebelling against Chief Minister Mamata Banerjee and planning a formal challenge to her leadership.

This internal rift threatens the stability of the ruling party in West Bengal. If the rebels successfully bypass anti-defection laws, it could force a significant shift in the party's national alliance strategy and weaken the Chief Minister's grip on the legislative wing.

The rebel group intends to submit a formal letter to the Lok Sabha speaker. Members of the faction said they have secured the signatures necessary to avoid the penalties associated with anti-defection legislation. Reports on the size of the group vary, with one source stating 20 MPs [1] have joined the rebellion, while another reports that 23 MPs [2] are in contact with the rebel camp.

To successfully merge or split without losing their seats, the group requires a minimum of 20 signatures [1] to satisfy legal requirements. The movement is driven by discontent with the leadership of Mamata Banerjee, and a desire to change how the party aligns with other political entities.

There are contradictions regarding the leadership of this new faction. One report identifies the chosen leader as a veteran female parliamentarian [1]. However, another report identifies Ritabrata Banerjee as the leader of the group [2].

The crisis has prompted the Chief Minister to call an emergency meeting to address the instability. The outcome of this meeting will determine whether the party can resolve the dispute internally, or if the faction will move forward with its formal submission to the speaker.

A faction of Trinamool Congress (TMC) MPs is rebelling against Chief Minister Mamata Banerjee.

The potential split within the TMC represents a critical test of the anti-defection law's efficacy in India. If a group of 20 or more MPs successfully breaks away, it could fundamentally alter the balance of power in West Bengal and shift the TMC's positioning within national coalitions, potentially isolating the Chief Minister's current strategy.