West Bengal’s Final Phase Arrives. The Money Already Moved.

Prediction markets have swung toward Mamata’s AITC as West Bengal’s decisive second phase goes to vote Wednesday.

West Bengal votes in its decisive second phase on Wednesday, with 142 of 294 seats in play. Media coverage frames the contest as neck-and-neck. Prediction markets disagree.

On Polymarket, AITC’s probability of winning the most seats has climbed 2.6 points in three days to 58.6% as of April 27 (Polymarket, as of 27 April 2026). BJP sits at 41.2%. The shift began immediately after Phase 1, where turnout hit 92%, a figure that historically rewards the party with stronger ground machinery. In Bengal, that is Mamata Banerjee’s operation.

The question analysts are now asking is not whether AITC wins, but by how much. Frontline’s post-Phase 1 framing centred on whether BJP can cross 100 seats. That is the language of a party fighting for respectability, not power.

Prime Minister Modi’s campaign schedule tells a similar story. He spent his final rally day roadshowing through Barrackpore, a marginal urban constituency. Targeting swing seats one by one is the strategy of a party defending specific positions, not one expecting a statewide wave.

One variable could still shift the picture. The Election Commission removed 12.9 lakh voters from the rolls ahead of Phase 2. TMC alleges deliberate disenfranchisement in stronghold areas. In tight constituencies, that margin matters. Whether the removals hurt AITC or BJP voters more is unclear, and no public analysis has mapped which seats are most affected.

The geopolitical stakes extend beyond Kolkata. A decisive Mamata victory limits the central government’s institutional leverage in eastern India and shapes the tenor of India-Bangladesh border and trade policy for the next five years.

Wednesday’s vote will clarify whether AITC’s market-implied lead holds or whether the deleted voter controversy and BJP’s targeted urban push narrow the gap. For now, the money and the turnout data point in the same direction.