18. Bongaigaon

Asom Gana Parishad held the seat; the winning margin narrowed from 24.8% to 15.9%.

• Won on a lower shareIts own vote share fell 7.8% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 76.2% between them, down from 82.9% — the field split more ways.

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