Prakash Chik Baraik became the third Trinamool Congress (TMC) Rajya Sabha MP to resign from the Upper House in under a week when he stepped down on June 11. His exit adds to what is already the worst internal crisis in the party’s nearly 30-year history. The collapse follows TMC’s defeat in the 2026 West Bengal Assembly elections, which ended Mamata Banerjee’s 15-year hold on the state and set off simultaneous rebellions in the legislature and in Parliament.

Here is every leader who has quit, been expelled, or formally broken ranks.

Rajya Sabha resignations

Prakash Chik Baraik

The latest departure. Baraik entered the Rajya Sabha from West Bengal in August 2023. He is the third TMC Upper House MP to go in six days.

Sushmita Dev

Dev’s resignation received acceptance at Rajya Sabha Chairman with effect from June 10, 2026. She joined the Trinamool Congress in 2021 after leaving the Congress and is the daughter of Assam Congress veteran Santosh Mohan Dev. She had earlier served as an MP from Silchar. After resigning, she met Assam Chief Minister Himanta Biswa Sarma at his residence, sparking speculation she may join the BJP. She cited “personal and political reasons” but gave no further details.

Sukhendu Sekhar Ray

Ray was the first TMC MP to leave the party after the 2026 election result. He told reporters he was sidelined within the party for demanding custodial interrogation of the police commissioner and the principal of RG Kar College following the rape and murder case there. In his statement, Ray described the election result as a verdict against the “15-year anarchical rule” of the Mamata Banerjee-led party.

Koel Mallick (unconfirmed)

Sources reported on June 8 that Koel Mallick would also resign from the Rajya Sabha, which would have brought TMC’s Upper House strength down to 11. However, no formal confirmation or official notification of her resignation has been issued as of the latest reports. Mallick, a well-known Bengali actress and daughter of actor Ranjit Mallick, was elected to the Rajya Sabha from West Bengal in April 2026.

Lok Sabha rebel MPs

These MPs have not formally resigned their Lok Sabha seats but have publicly broken with the TMC, quit party posts, or signed letters supporting the NDA. Reports indicate a mass revolt of approximately 20 of TMC’s 28 Lok Sabha MPs who have announced their alignment with the BJP-led NDA.

Kakoli Ghosh Dastidar (Barasat)

Ghosh Dastidar resigned from all organisational posts in the Trinamool Congress, days after stepping down as the party’s Barasat district president. She is the acknowledged leader of the rebel Lok Sabha faction. Ghosh was among the first senior leaders to publicly criticise the role of I-PAC, the consultancy linked to Abhishek Banerjee, in party affairs. She lost her post as the party’s chief whip in the Lok Sabha and filed a complaint against the MP who replaced her. She continues as the sitting MP from Barasat.

Saayoni Ghosh (Jadavpur)

Ghosh initially defended Mamata Banerjee after the election defeat, publicly claiming the party did not face defeat due to voters but by vote rigging. In June 2026, she shifted her position and joined the rebel Lok Sabha faction, stating she saw “no future in TMC.”

Yusuf Pathan (Baharampur)

TMC loyalists publicly called out Pathan, with senior leader Mahua Moitra questioning on social media whether he was rushing to Delhi because Amit Shah had summoned him. He is among the 20 rebel Lok Sabha MPs.

Shatrughan Sinha (Asansol)

The Bollywood veteran and sitting Asansol MP is among those named in the rebel faction. Sinha is one of the prominent names who have defected to the rebel camp.

Mala Roy (Kolkata Dakshin)

Roy is listed among the 20 rebel TMC MPs who have reportedly aligned with the dissident faction.

Rachana Banerjee (Hooghly)

The actress-turned-politician is in the rebel camp. She holds the Hooghly Lok Sabha seat.

Satabdi Roy (Birbhum)

The veteran singer and MP from Birbhum is among the 20 rebels.

Deepak Adhikari (Ghatal)

Actor-politician and Ghatal MP, listed in the rebel faction that has aligned with the NDA.

June Malia (Medinipur)

The actress and Medinipur MP is among the dissident Lok Sabha MPs.

Partha Bhowmick (Barrackpore)

Listed among the 20 rebel Lok Sabha MPs who have distanced themselves from the TMC leadership.

Bapi Halder (Mathurapur)

Halder is among the reported rebel Lok Sabha MPs aligned with the dissident faction.

Jagadish Chandra Barma Basunia (Cooch Behar)

Listed as part of the rebel camp in reports of the 20-MP dissident bloc.

Khalilur Rahaman (Jangipur)

Named among the rebel MPs who have broken with the party leadership.

Abu Taher Khan (Murshidabad)

Named in the dissident Lok Sabha faction.

Asit Kumar Mal (Bolpur)

Listed among the 20 rebel TMC Lok Sabha MPs.

Sharmila Sarkar (Bardhaman Purba)

Named in the rebel faction.

Arup Chakraborty (Bankura)

Listed in the 20-strong rebel camp.

Kalipada Soren (Jhargram)

Named among the rebel Lok Sabha MPs.

Mitali Bag (Arambagh)

Listed in the dissident bloc.

Prasun Banerjee (Howrah)

The former Indian football captain and Howrah MP is among the rebel Lok Sabha faction.

Expelled MLAs: West Bengal Assembly

Ritabrata Banerjee

The architect of the legislative revolt. Ritabrata Banerjee and Sandipan Saha were expelled from the TMC for alleged anti-party activities after they claimed that signatures of several MLAs were used without consent on an internal party letter. The expulsion accelerated the split. 58 dissident TMC MLAs backed Ritabrata Banerjee as the leader of the legislature party and conveyed their decision to the West Bengal Assembly Speaker. He was recognised as Leader of the Opposition, replacing Sobhandev Chattopadhyay.

Sandipan Saha

Expelled alongside Ritabrata Banerjee. He is co-leader of the rebel Assembly faction and has remained part of the dissident bloc.

Party post resignations

Santanu Sen

Sen resigned as TMC’s national spokesman on May 28, citing the previous state government’s handling of the RG Kar rape and murder case as his reason. He has not resigned his Rajya Sabha seat.

The scale of the crisis

58 of TMC’s 80 MLAs defied the party to elect Ritabrata Banerjee as Leader of the Opposition, forming a rival leadership structure. Nearly 20 TMC MPs, including Kakoli Ghosh Dastidar, announced support for the BJP-led NDA and sought separate seating arrangements in Parliament. Sources say several MPs are also considering forming a separate group and aligning with the ruling NDA, similar to the AAP MPs who resigned and later joined the BJP. Three Rajya Sabha seats have already been vacated. The anti-defection law remains the key legal variable for what comes next.