BJP Breaks TMC's Fifteen-Year Grip on West Bengal as Suvendu Adhikari Sworn In

Suvendu Adhikari was sworn in as chief minister of West Bengal on the afternoon of 9 May 2026 at Kolkata's Brigade Parade Ground, closing a chapter that began when Mamata Banerjee's Trinamool Congress first swept to power in the state fifteen years earlier. The ceremony drew thousands to the historic parade ground in the heart of the capital, a visible demonstration of the scale of the political shift that the 2026 assembly election delivered.
Adhikari, who served as opposition leader in the outgoing assembly, now becomes the first BJP chief minister in a state the party has targeted for more than a decade. The scale of the victory — 207 of 294 seats, according to LiveMint's count of the results — gave the swearing-in the character of a victory rally as much as a constitutional formality. The Trinamool Congress, which entered the election holding 215 seats, was reduced to a rump opposition.
The Fall of Didi's Machine
Mamata Banerjee, whose political brand has defined Bengali politics for the better part of two decades, now faces the novel position of sitting on the opposition benches in the assembly she once dominated. Her government was the longest-serving administration in the state since the Left Front's 34-year reign ended in 2011. The TMC's loss of over 180 seats represents an electoral collapse without obvious precedent in recent Indian state politics, absent a comparable wipeout at the national level.
What broke the machine is a question the TMC's remaining strategists will spend months unpicking. Incumbency fatigue, anti-incumbency cycles that eventually catch every durable machine, and a BJP campaign that channelled resources and attention into the state over multiple election cycles all played roles. What is not in dispute is the outcome: Kolkata's corridors of power changed hands decisively.
A Politician Who Defected Before the Wind Shifted
Adhikari's path to the chief minister's chair carries a specific irony for those who followed Bengali politics closely. He served as a minister in the Banerjee government before crossing to the BJP in 2021 — a move that was widely read at the time as a calculation that proved misjudged, given the TMC's continued dominance in subsequent elections. The political verdict that mattered came five years later, and it vindicated the gambit. He will govern the state he once helped administer from the other side of the aisle.
The BJP's Eastern Arc
The win is a structural advance for the BJP rather than a transactional one. West Bengal is the largest state in India's east; its acquisition completes a territorial arc that already includes Assam and Tripura. Having broken through in the one state where the Congress and the regional mainstream had historically blocked the party's expansion, the BJP now confronts a very different regional map. The counter-argument — that governing West Bengal, with its distinct urban-rural dynamics, its legacy of trade unionism, and its deep-rooted civil society institutions, is a different proposition from winning it — is the one that will matter most in the months ahead.
What Comes Next
Adhikari inherits a state whose public finances have been under sustained pressure, whose infrastructure needs are acute, and whose political culture resists easy centralisation. The new government's first budget, its appointments to key posts, and its early handling of the law-and-order file will set the parameters within which both supporters and critics assess the administration. For the BJP's national leadership, the West Bengal mandate is simultaneously a reward and a down payment: proof of concept for the party's regional strategy, and the start of a governance test that plays out in public.
This publication's wire inputs on the West Bengal result led with crowd scale at the swearing-in; most national outlets led with seat-count arithmetic. Both reads are accurate; the ceremony captured something the numbers alone don't — the emotional dimension of a political era ending.