Three Former TMC Rajya Sabha MPs Join BJP in Kolkata: Big Blow to Mamata Banerjee

By Political Bureau, New Delhi Chronicle

Published: July 9, 2026

KOLKATA — In a major political development that has sent shockwaves through West Bengal’s ruling party, three former Trinamool Congress (TMC) Rajya Sabha MPs officially joined the Bharatiya Janata Party (BJP) today.

The high-profile defections took place at the BJP’s state headquarters in Kolkata, in the presence of senior central and state leaders. This mass switchover is being viewed as a significant psychological and strategic setback for Chief Minister Mamata Banerjee, disrupting her party’s internal cohesion ahead of upcoming political battles.

The Shift in Bengal’s Power Dynamics

The leaders were formally inducted into the saffron party by senior BJP leadership, who presented them with the party flag. Speaking to the press immediately after the induction, the newly minted BJP members cited growing discontent with the TMC’s internal functioning and a alignment with Prime Minister Narendra Modi’s vision for development as their primary reasons for jumping ship.

“The democratic space within the Trinamool Congress has completely shrunk,” one of the defecting leaders stated on the condition of anonymity prior to the event. “We want to work for the actual development of West Bengal, which is only possible under the vision of the central government.”

Why This Matters for Mamata Banerjee

While the leaders are former members of the Upper House, their exit carries massive symbolic weight. Political analysts point out that these defections highlight a deeper, lingering vulnerability within the TMC’s second-tier leadership.

The BJP has been quick to capitalised on the moment, positioning the event as a sign of an impending collapse within the ruling state government.

Key Takeaways from the Defection:

• Timing: The switch comes at a crucial juncture when both parties are intensifying their grassroots campaigns in West Bengal.

• Perception Battle: For the BJP, this serves as a massive boost to morale, proving they still hold strong gravity for disgruntled TMC heavyweights.

• TMC’s Defense: Trinamool insiders have downplayed the exits, calling the leaders “opportunists” whose departures will have zero impact on the party’s core vote bank.

What’s Next for West Bengal Politics?

The induction of these three seasoned politicians is expected to trigger a fresh war of words between Nabanna (the state secretariat) and the BJP central leadership. Observers are keeping a close watch on whether these defections will trigger a domino effect among other dissatisfied TMC workers and local leaders in the districts.

With the BJP aggressively expanding its footprint in Kolkata, Mamata Banerjee faces the immediate challenge of plugging the leaks within her party ranks and keeping her flock together.