4. Dirang

Indian National Congress held the seat; the winning margin narrowed from 19.8% to 0.0%.

• Won on a lower shareIts own vote share fell 58.0% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 0.0% between them, down from 96.3% — the field split more ways.

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