Twenty rebel Trinamool Congress MPs informed Lok Sabha Speaker Om Birla that their group has merged with the Nationalist Citizens Party of India (NCPI). The Speaker's office has sent an email to the group of TMC MPs led by Mamata Banerjee, inviting them for a formal meeting, and is expected to take any decision regarding the merger only after discussing the matter with the party's official leadership. According to the Economic Times, Birla is reviewing the status of the 20 MPs and will make a decision after hearing both factions.

Accounts differ on the number of MPs involved: Kakoli claims 22 Lok Sabha MPs are now in the dissident TMC camp, according to The Hindu, while the merger notification cited 20 MPs. A meeting of the dissident TMC MPs was initially scheduled to be held in Kolkata but has been shifted to Delhi, according to The Hindu. The rebel TMC MPs are set to join the Tripura-based Nationalist Citizens Party of India, according to Bluesky. The NCPI, registered in West Bengal’s Howrah, had contested a few seats in the 2023 Tripura assembly elections, according to The Times of India. The slogan of the NCPI includes 'to save your rights, reject political turncoats', according to The Times of India. The rebel TMC MPs will be backing the BJP-led NDA, according to The Times of India.