5. Dinhata

Indian National Congress held the seat; the winning margin narrowed from 9.4% to 4.5%.

• Won on a lower shareIts own vote share fell 8.3% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 85.8% between them, down from 97.5% — the field split more ways.

Written from the constituency figures by a fixed set of rules — no language model.