231. Betul

Indian National Congress held the seat; the winning margin narrowed from 16.8% to 12.6%.

• Won on a lower shareIts own vote share fell 15.2% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 69.9% between them, down from 96.0% — the field split more ways.

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