India, May 10 -- The Bharatiya Janata Party's sweeping victory in the 2026 West Bengal Assembly elections is set to trigger a cascading political effect that will fundamentally alter the Rajya Sabha balance from the state over the next six years, sharply reducing the Trinamool Congress' representation in the Upper House and expanding the BJP's long-term parliamentary footprint.

While the immediate focus after the election has remained on the BJP's breakthrough in a state that had long resisted saffron expansion, the more consequential institutional shift may unfold gradually through successive Rajya Sabha election cycles, where Assembly arithmetic directly determines representation.

The BJP has won 207 seats in the 294-member West Benga...