Trinamool Congress faces existential crisis as Mamata Banerjee's party splits

That is the predicament facing the Trinamool Congress (TMC) party in West Bengal, a state of more than 100 million people in eastern India.

Barely a month after being voted out of office, the party is facing a rebellion by most of its legislators, a potential split among its MPs and growing doubts about the authority of its founder, Mamata Banerjee.

Banerjee is no ordinary regional leader. In 2011 the firebrand politician achieved what many thought impossible, ending 34 uninterrupted years of Communist rule in West Bengal and dismantling one of the world's longest-serving elected left-wing governments. Time magazine later named her among the world's 100 most influential people.

She would go on to govern for 15 years, turning the TMC into India's most successful regional party and herself into one of the country's most formidable opposition politicians.

Yet Banerjee's party was hardly annihilated. It still won 26 million votes, only about three million fewer than the BJP, and retained roughly 40% of the popular vote. It remains a substantial political force, with 80 legislators in the state assembly and 28 members of parliament.

By any conventional measure, it should be regrouping after defeat. Instead, it appears to be coming apart.

The real shock came inside the legislature. Within weeks of the election, roughly three-quarters of the TMC's legislators revolted against both Banerjee and her nephew, Abhishek Banerjee, widely seen as her heir.

What initially appeared to be a state-level mutiny has now spread to Delhi. A reported 20 of the TMC's 28 MPs have now written to the speaker of parliament seeking to break away from the party's parliamentary group and align themselves with the BJP-led ruling alliance. If confirmed, it would elevate the crisis from a legislative revolt to an existential challenge to the party's leadership and unity.

The parliamentary revolt is only the most visible symptom of a wider breakdown. In Falta, a constituency the TMC had won with 56% of the vote in 2021, the party failed even to keep a candidate in the fray for a repoll.

Then came perhaps the starkest symbol of its decline: a public meeting earlier in June that drew only a few hundred people, a far cry from the vast crowds that once testified to Banerjee's political dominance.

Power has ebbed away with startling speed. Almost every day, TMC leaders are arrested on corruption charges and paraded, party offices are deserted, organisational networks are being dismantled and figures who once commanded fear and influence are being publicly attacked in their own strongholds.

The speed of the TMC's unravelling points to a deeper weakness. Unlike the communist movement it overthrew in 2011, the party never built a robust ideological structure capable of surviving the loss of power.

Its unifying force was a combination of Banerjee's charismatic personal appeal and the patronage that comes with power. As Bhattacharyya puts it, the party rested on two pillars: "Mamata's brand value and governmental resources."

"To maintain control across Bengal, Banerjee relied less on party institutions than on powerful local leaders who were given considerable autonomy in their own fiefdoms," says Bhattacharyya.

"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 or switch allegiance," says Bhattacharyya.

"Earlier, defections tended to involve individual leaders breaking away. Today entire factions can rebel because the BJP provides an alternative centre of power, resources and political protection. The pattern resembles recent splits in parties such as Shiv Sena [a powerful regional party in western India] where a succession struggle and the concentration of power within one family triggered a large-scale rebellion," says Verma.

"Ambitious lieutenants may accept a founder's authority, but often balk when leadership is passed to a family heir. The split in Shiv Sena, after Uddhav Thackeray elevated his son Aditya, illustrated the problem, he says.

"Combined with generational transitions and patronage-driven party structures, it creates a potent mix: once a party loses office, local leaders who joined for power and influence often see little reason to stay," says Verma.

She dismisses the rebellion as naked opportunism. "For so long, some people enjoyed power, and now that we have lost, they immediately seem to have reached an understanding with another party," she said last week.

"She can still come back," says Bhattacharyya. "If there is one face in Bengal that still attracts attention and one voice that people cannot simply dismiss, it is hers."

But any revival, he argues, will require more than charisma. It will demand a willingness to renew the party and make difficult decisions about its leadership. So far, that has not been Banerjee's strongest suit.

Throughout her career, Banerjee has defied political odds. Yet the task before her is unlike any she has faced before. Overthrowing a government is one thing. Rebuilding a party after its own leaders have abandoned it may be quite another.