Power has ebbed away with startling speed.
For fifteen years, Mamata Banerjee held together a political movement through force of personality and the rewards of power — but when West Bengal's voters turned away last month, the architecture beneath her Trinamool Congress was revealed to be thinner than it appeared. Within weeks of the electoral defeat, three-quarters of her own legislators revolted and most of her parliamentary delegation sought refuge with the ruling BJP, exposing what happens when a party built on patronage rather than principle loses the one thing that held it together. The story unfolding in West Bengal is older than any single politician: the question of whether a movement can survive the departure of the conditions that created it.
- A party that won 26 million votes just weeks ago is hemorrhaging its own elected members at a pace that suggests not a setback but a dissolution.
- Three-quarters of TMC's state legislators have turned against Banerjee and her chosen heir, seizing the party's legislative machinery and accusing the leadership of forging official documents.
- Twenty of 28 TMC members of parliament have written to the speaker seeking to defect to the BJP-led coalition, a move that would strip the party of its national presence almost overnight.
- Public rallies that once drew massive crowds now attract a few hundred people, party offices sit empty, and local leaders face attacks in their own strongholds — the physical landscape of collapse.
- The BJP's dominance has changed the rules: regional politicians no longer need to wait out a loss, because an alternative center of power, resources, and protection now actively courts them.
- Banerjee, at 71, insists the party will recover, but rebuilding institutions she never prioritized may prove far harder than the political comebacks she has managed before.
Mamata Banerjee spent fifteen years transforming the Trinamool Congress into India's most formidable regional party, toppling a communist government that had ruled West Bengal for over three decades and earning international recognition as a political force. Then, last month, her party lost power in a state of more than 100 million people — and within weeks, the party began to collapse from within.
The electoral result was not a rout. The TMC won 26 million votes, retained roughly 40 percent of the popular vote, and held 80 state legislators and 28 members of parliament. By conventional logic, a party with those numbers should regroup. Instead, roughly three-quarters of its legislators turned against Banerjee and her nephew Abhishek, seized control of the party's legislative wing, and accused the leadership of forging signatures on official documents. The mutiny then spread to parliament, where about 20 of the party's 28 MPs sought to defect to the BJP-led ruling coalition — a move that would transform a legislative crisis into an existential one.
The speed of the unraveling points to a structural flaw. Unlike the communist movement it displaced, the TMC was never built on ideology. It rested on Banerjee's personal charisma and the patronage that comes with controlling government. Local strongmen across West Bengal tolerated one another and deferred to the leadership because power made it worth their while. Once that power was gone, so was their reason to stay.
The BJP's rise has sharpened this dynamic across India. Where defections once meant isolated individuals breaking away, entire factions can now rebel because the BJP offers an alternative home — resources, protection, and relevance. The pattern has appeared in other family-led regional parties, where lieutenants who accepted a founder's authority refuse to extend that deference to an appointed heir.
Banerjee, now 71, remains defiant, calling the BJP's victory illegitimate and dismissing the rebellion as opportunism. She has defied political odds before. But overthrowing a government and rebuilding a party after its own leaders have abandoned it are fundamentally different challenges — and whether she can meet this one remains an open question.
Mamata Banerjee spent 15 years building the Trinamool Congress into India's most formidable regional party. She had toppled a communist government that had ruled West Bengal for 34 years, a feat that earned her a place on Time magazine's list of the world's 100 most influential people. By any measure, she was a political force. Then, last month, her party lost power in West Bengal—a state of more than 100 million people—and within weeks, the party began to collapse from the inside.
The electoral loss itself was not catastrophic. The TMC won 26 million votes, only three million fewer than the victorious Bharatiya Janata Party, and retained roughly 40 percent of the popular vote. The party still held 80 legislators in the state assembly and 28 members of parliament. By conventional political logic, a party with those numbers should regroup and prepare for the next election. Instead, the TMC is unraveling.
The rebellion started in the state legislature. Within weeks, roughly three-quarters of the TMC's legislators turned against both Banerjee and her nephew Abhishek, widely regarded as her successor. The rebels took control of the party's legislative wing, installed their own opposition leader, and accused the leadership of forging signatures on official documents. What began as a state-level mutiny has now spread to the national parliament. About 20 of the party's 28 MPs have written to the speaker of parliament seeking to break away and align themselves with the BJP-led ruling coalition. If that defection holds, it would transform a legislative crisis into an existential threat to the party's survival.
The symptoms of collapse are visible everywhere. In Falta, a constituency the TMC had won with 56 percent of the vote just five years earlier, the party could not even field a candidate for a special election. A public rally Banerjee held in early June drew only a few hundred people—a stark contrast to the massive crowds that once demonstrated her political dominance. Almost daily, TMC leaders are arrested on corruption charges, party offices sit empty, and figures who once wielded considerable power are being publicly attacked in their own strongholds.
The speed of this unraveling reveals a fundamental weakness in how the party was constructed. Unlike the communist movement it displaced, the TMC never developed a robust ideological foundation capable of surviving the loss of power. Instead, the party rested on two pillars: Banerjee's personal charisma and the patronage that comes with controlling the state government. To maintain control across West Bengal, Banerjee relied on powerful local leaders who operated with considerable autonomy in their own territories. These strongmen competed fiercely for influence and resources, but power kept them bound to the party. Once that power vanished, so did their incentive to stay.
The BJP's rise has fundamentally altered the calculus for regional politicians. Where defections once involved individual leaders breaking away, entire factions can now rebel because the BJP offers an alternative center of power, resources, and political protection. This pattern has appeared elsewhere—the Shiv Sena, a powerful regional party in western India, fractured when its founder elevated his son to leadership, triggering a large-scale rebellion. The difference now is that ambitious politicians have somewhere to go. Regional parties have become increasingly centralized and family-driven, and when succession passes to a family heir rather than emerging through party institutions, lieutenants who accepted the founder's authority often refuse to accept the heir's. The BJP's presence transforms that resentment into action.
Banerjee, now 71, remains defiant. She has called the BJP's victory illegal and immoral, alleged that around 100 seats were stolen, and dismissed the rebellion as naked opportunism by people who enjoyed power and now seek it elsewhere. She insists the party can recover. Yet recovery will require more than her personal appeal. It will demand a willingness to rebuild the party's institutions and make difficult decisions about its leadership structure—something she has not demonstrated throughout her career. She has defied political odds before, but overthrowing a government is fundamentally different from rebuilding a party after its own leaders have abandoned it. Whether she can manage that transformation remains unclear.
Notable Quotes
For so long, some people enjoyed power, and now that we have lost, they immediately seem to have reached an understanding with another party.— Mamata Banerjee, dismissing the rebellion as opportunism
The TMC has lost the government, and Banerjee's personal election defeat in Kolkata has tarnished a political brand. As a result, many local power brokers are finding themselves vulnerable to rivals, investigations and public anger, creating strong incentives to defect.— Dwaipayan Bhattacharyya, political scientist
The Hearth Conversation Another angle on the story
Why did the party collapse so quickly after just one electoral loss? They still had millions of votes and dozens of legislators.
Because the party was never really a party in the traditional sense. It was Mamata plus a network of local strongmen who stayed loyal because she controlled the state government and could reward them. Once she lost that power, the glue dissolved.
But couldn't she have held them together through sheer force of personality? She was on Time's 100 most influential list.
Charisma works when it's paired with resources. When you can't deliver patronage, protection, or access to state machinery, your personal appeal only goes so far. And now her own electoral defeat in Kolkata has tarnished that brand.
The BJP seems to be playing a role here beyond just winning the election.
Exactly. The BJP isn't just an alternative government—it's an alternative power structure offering protection and resources to defectors. That changes everything. A local leader who might have stayed loyal to Banerjee out of fear or habit now sees the BJP as a safer bet.
Is this unique to West Bengal, or is it happening elsewhere?
It's part of a broader pattern in Indian politics. Regional parties have become family-centric and centralized. When power passes to a family heir instead of emerging through institutions, ambitious lieutenants rebel. The Shiv Sena split the same way. But the BJP's dominance makes those rebellions stick.
Can Banerjee rebuild this?
She has the name recognition and the voice people still listen to. But rebuilding requires institutional renewal, not just charisma. That's never been her strength.