15. Dhupguri

Communist Party of India (Marxist) held the seat; the winning margin held roughly steady from 19.9% to 20.3%.

• Won on a lower shareIts own vote share fell 8.7% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 80.9% between them, down from 98.6% — the field split more ways.

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