Twenty rebel Trinamool Congress (TMC) MPs announced a merger with the Nationalist Citizens Party of India (NCPI) on June 14 [1].

The move provides a numerical advantage to the BJP-led National Democratic Alliance (NDA) before the Monsoon Session of Parliament begins on July 21, 2026 [1], [2].

The lawmakers met with Lok Sabha Speaker Om Birla in New Delhi to formalize the transition [1]. During the meeting, the group sought separate seating in the Lok Sabha and declared their official support for the NDA [1]. This shift follows reported internal rifts within the TMC [2].

The defection comes amid broader instability within the party's ranks. Earlier reports indicated that approximately 50 TMC MLAs may have been in contact with the BJP [3]. While some reports initially described the MPs as being in contact with the BJP and ready to switch sides, the group has now formalized their alignment through the NCPI [1], [3].

Abhishek Banerjee said the Lok Sabha Speaker should not recognize the breakaway group [1]. The internal crisis in West Bengal's ruling party continues to evolve as members seek alternative political affiliations, a trend that could further weaken the TMC's legislative standing.

The timing of the merger is strategic, as it alters the balance of power in the lower house just weeks before the legislative session commences [1], [2].

Twenty rebel Trinamool Congress (TMC) MPs announced a merger with the Nationalist Citizens Party of India

This merger represents a significant blow to the Trinamool Congress's unity and legislative strength. By moving into the NCPI and aligning with the NDA, these 20 MPs shift the parliamentary arithmetic in favor of the governing coalition. This could streamline the NDA's ability to pass legislation during the upcoming Monsoon Session and signals a growing vulnerability within the TMC's organizational structure in West Bengal.