India's Bharatiya Janata Party (BJP), led by Prime Minister Narendra Modi, has won a landmark majority in West Bengal state elections, ending 15 years of rule by Mamata Banerjee's Trinamool Congress (TMC) — a victory described by analysts as one of the most significant political breakthroughs of Modi's 12 years in power. Counting results showed the BJP leading or winning more than 200 of the state's 293 seats, with the party securing over 44% of the popular vote. Modi called it a "record" win, saying "people's power has prevailed." The results, announced Monday alongside four other state and territorial elections, also saw the Congress-led United Democratic Front (UDF) decisively defeat the long-ruling Communist-led government in Kerala, and a dramatic upset in Tamil Nadu where a debut party led by a film star toppled a veteran chief minister.

West Bengal — a densely populated eastern state of over 100 million people, bordering Bangladesh and Nepal — has long been considered one of India's most resistant political territories for the BJP. The state had been governed by the left-wing Communist Party for 34 years before Banerjee's TMC swept to power in 2011, and political scientists have described it as a system that historically favours dominant, entrenched parties. The BJP had built a growing presence across three successive elections, consistently polling around 39% of the vote, but had never managed to convert that support into outright victory. Analysts say the 2026 result reflects a decade-long political project finally reaching its tipping point, rather than a sudden upheaval. Crucially, the Muslim vote — which represents roughly 27% of Bengal's population and had historically consolidated strongly behind the TMC — appears to have split this time, with smaller parties including a Left-ISF alliance and regional outfits drawing away a portion of minority support that had previously held firm for Banerjee.

The BJP's campaign combined welfare promises — including pledges to double cash transfers — with what political scientists describe as a sharper strategy of Hindu voter consolidation. Analysts note that the TMC's welfare-based politics, which had been particularly effective with women voters, began losing its edge as voters came to see benefits as routine rather than transformative, and as governance scandals, including a widely publicised teachers' recruitment fraud, fed anti-incumbency sentiment. Banerjee, however, rejected the result, alleging the BJP had "stolen more than 100 seats" and calling the victory "immoral." The election had also been shadowed by controversy over a large-scale revision of voter rolls that removed nearly three million names; critics, including civil society groups, alleged this disproportionately affected poor, minority, and migrant communities.

In Kerala, a southern coastal state with a tradition of alternating between two political alliances, the Congress-led UDF won a historic 102 seats in the 140-member assembly, relegating the Communist-led Left Democratic Front (LDF) to just 35. Chief Minister Pinarayi Vijayan, who had led the state for a decade, resigned following the result. The IUML, the Indian Union Muslim League — a key UDF ally with a strong base in Kerala's northern Malabar region — won a record 22 seats, playing a pivotal role in the coalition's landslide. The BJP, which has long struggled to break into Kerala's traditionally bipolar political contest, won three seats. In Tamil Nadu, another southern state, veteran Chief Minister MK Stalin of the DMK lost his own constituency seat as his party was swept aside by the TVK, a party founded only in 2024 by actor Vijay. The BJP retained power in the northeastern state of Assam for a third consecutive term, and held on in the small coastal territory of Puducherry.

The results carry significant national implications. With a general election due in 2029, and amid economic pressures including high unemployment and ongoing trade negotiations with the United States, the BJP's consolidation of eastern India — added to its existing dominance in the Hindi-speaking north and west — substantially strengthens Modi's political position. The defeat of the last Communist-led state government, in Kerala, marks the end of an era for India's left. For Banerjee, the loss ends 15 years at the helm of one of India's most consequential states, though her party has signalled it intends to mount a comeback from opposition.