In a significant political development, Trinamool Congress (TMC) Rajya Sabha member Sushmita Dev submitted her resignation to the Chairman of the Upper House on Thursday, dealing a fresh blow to party supremo Mamata Banerjee. The resignation comes at a time when the TMC is gearing up for the 2026 West Bengal assembly elections.
Personal Reasons Cited
According to sources, Dev cited personal reasons for her decision to step down from the Rajya Sabha. In her resignation letter, she expressed gratitude to the party leadership for giving her the opportunity to serve as a member of Parliament. However, she did not elaborate on the specific factors that prompted her move.
Impact on TMC
The resignation is perceived as a setback for Mamata Banerjee, who has been striving to consolidate her party's position ahead of the crucial assembly polls. Dev, a prominent face from the Barak Valley region of Assam, was considered an influential leader within the TMC. Her departure could potentially affect the party's outreach in the northeastern states.
Political analysts suggest that the resignation might be linked to internal party dynamics or differences over certain policy matters. However, no official statement has been issued by the TMC regarding the reasons behind Dev's decision.
Who is Sushmita Dev?
Sushmita Dev, a former Congress leader, joined the TMC in 2020. She was elected to the Rajya Sabha in 2022 with the support of the TMC. Known for her articulate speeches and active participation in parliamentary debates, she served on several committees during her tenure.
Her resignation reduces the TMC's strength in the Rajya Sabha, where the party already has limited numbers. The party will now have to field a candidate in the upcoming by-election to fill the vacant seat.
Reactions from Political Circles
The opposition Bharatiya Janata Party (BJP) was quick to seize the opportunity, with leaders claiming that the resignation reflects growing discontent within the TMC ranks. “This is yet another indication that Mamata Banerjee’s leadership is losing its charm. More resignations may follow,” said a senior BJP leader.
Meanwhile, TMC leaders downplayed the development, stating that Dev’s resignation was a personal decision and would not impact the party’s electoral prospects. “We respect her decision and wish her the best. The party remains united under Mamata Banerjee’s leadership,” said a TMC spokesperson.
Future Implications
With the 2026 assembly elections on the horizon, the TMC cannot afford any internal strife. The resignation of a key leader like Sushmita Dev may prompt the party to introspect and address any underlying issues. Political observers will closely watch whether this triggers a chain reaction or remains an isolated incident.
As of now, the TMC has not announced a replacement for Dev’s Rajya Sabha seat. The by-election schedule is expected to be announced by the Election Commission in due course.



