BJP At 48% With 10-Point Edge: Why Pollster Predicts Bengal Vote Share Swing Could Unseat Trinamool

Last Updated:April 30, 2026, 19:43 IST

West Bengal Exit Polls 2026: The exit poll data indicates that the BJP’s rise is being powered by strong backing among key caste groups.

West Bengal Exit Polls 2026: A surge in the Bharatiya Janata Party’s vote share in West Bengal is shaping up to be the most consequential signal from the latest exit polls and could prove to be the biggest shock for Mamata Banerjee if it holds on counting day.

According to Today’s Chanakya, the BJP is projected to secure 48% (±3%) of the vote share, compared to 38% (±3%) for the All India Trinamool Congress (TMC+). A gap of around 10 percentage points is substantial in an electoral system like India’s, where even smaller differences can translate into significant seat advantages.

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Why Is This Vote Share Jump Such A Big Deal?

In a state like West Bengal, a near-50% vote share indicates more than just incremental growth. It suggests the BJP may have expanded its appeal across regions and voter segments, rather than relying on isolated pockets of support. Such a broad-based increase typically points to a wider shift in political preferences and can dramatically improve seat conversion.

Where Is Support For BJP Coming From?

The data indicates that the BJP’s rise is being powered by strong backing among key caste groups. Among Scheduled Castes (SCs), the BJP is estimated to command around 67% support, compared to 22% for the TMC+. A similar trend is visible among Other Backward Classes (OBCs), where the BJP is projected at 61%, well ahead of the 27% backing the TMC+. Among Scheduled Tribes (STs), the BJP also leads with 53%, while the TMC+ trails at 40%.

Read more: West Bengal Exit Poll 2026 By Today’s Chanakya: BJP Eyes Big Win With 192 Seats, TMC Reduced To 100

At the same time, Muslim voters remain overwhelmingly aligned with the TMC+, with the party projected to secure about 71% of the vote, while the BJP’s share is limited to around 8%. Taken together, these trends point to a clear pattern that the BJP is consolidating support among non-minority caste groups, while the TMC retains its dominance among minorities.

Why Could This Be A Shock For Mamata Banerjee?

Mamata Banerjee has maintained political dominance through a broad coalition that cuts across communities and social groups. If a significant portion of SC, OBC and ST voters has shifted towards the BJP, it could signal a weakening of that coalition. Even limited movement within these groups can have a large impact in a state where many constituencies are decided by relatively narrow margins, making the potential shift particularly significant.

Read more: Bengal’s 92% Turnout Beats Global Trends: How 2026 Elections From Hungary To Japan Compare

How Does Vote Share Translate Into Seats In West Bengal?

With a projected vote share of 48%, the BJP is estimated to win 192 ± 11 seats, comfortably above the majority mark of 147. If these vote share trends hold, the implications go beyond a simple change in government. They could point to a deeper political realignment in West Bengal, with the BJP emerging as a dominant force and the TMC facing its first major electoral setback in over a decade. The final outcome, however, will only become clear when votes are counted on May 4.

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