MPs Are Leaving Trinamool Congress, Can Mamata Banerjee’s Party Survive?

June 10, 2026

Just a few months ago, the Trinamool Congress (TMC) looked firmly in control of West Bengal politics. But today, the party is facing one of the biggest crises in its history.

After losing power in the 2026 West Bengal Assembly elections, the cracks within the party have become visible. What started as a rebellion by MLAs inside the state has now reached Parliament, with senior MPs resigning and openly questioning the party’s future.

What Happened After TMC’s Election Defeat?

The immediate trigger for the crisis was TMC’s defeat in the 2026 West Bengal Assembly elections. After ruling the state for 15 years under Mamata Banerjee, the party was voted out of power.

The defeat shocked many leaders and workers. Soon after the results, several MLAs began expressing dissatisfaction with the party leadership. Many accused the leadership of becoming disconnected from the ground reality and ignoring public anger.

Reports suggest that a large number of MLAs openly rebelled against the party leadership, exposing deep divisions within the organisation.

MPs Now Leaving the Party

The crisis has now moved from Kolkata to Delhi.

On June 8, senior TMC leader and Rajya Sabha MP Sukhendu Sekhar Roy resigned from both Parliament and the party. He said the election verdict reflected public anger over corruption, crime against women, poor governance and declining public services.

Just two days later, Rajya Sabha MP Sushmita Dev also resigned from the party and Parliament. Soon after resigning, she met Assam Chief Minister Himanta Biswa Sarma, leading to speculation that she could join the BJP.

Sushmita Dev is a former Congress MP from Assam who joined the TMC in 2021 and was given the responsibility of expanding the party in the Northeast.

These back-to-back resignations have raised serious questions about the stability of the party.

Why Are Leaders Unhappy?

Many dissident leaders claim that the party leadership became inaccessible after years in power.

A major part of the criticism is directed at Abhishek Banerjee, Mamata Banerjee’s nephew and the party’s national general secretary. Rebels have accused the leadership of ignoring grassroots workers and allowing a culture of corruption and arrogance to grow within the organisation.

Interestingly, many rebel leaders continue to express respect for Mamata Banerjee personally. Their criticism is often aimed more at the current power structure within the party than at Mamata herself.

Is TMC Headed for a Split?

Political observers believe this is the most serious internal challenge TMC has faced since its formation in 1998.

The crisis is unusual because it involves both MLAs and MPs. It is also not limited to a few leaders. Senior party figures are resigning, speaking publicly against the leadership and questioning the party’s future.

However, it is still too early to predict a complete split.

Can Mamata Banerjee Save the Party?

Despite the turmoil, Mamata Banerjee remains one of the most influential political leaders in West Bengal. She still enjoys a strong personal connect with a large section of voters and party workers.

TMC continues to have an established organisational network across the state. If Mamata can address the concerns of rebels, rebuild internal trust and bring the organisation together, the party may recover from the setback.

But if resignations continue and more MPs or MLAs leave, the crisis could deepen further.

For now, the battle is not just about leadership. It is about the future of a party that dominated West Bengal politics for 15 years. The coming months will decide whether TMC can reinvent itself or whether the current rebellion becomes the beginning of a much larger political collapse.