138. Dum Dum

Communist Party of India (Marxist) held the seat; the winning margin narrowed from 22.9% to 19.2%.

• Won on a lower shareIts own vote share fell 11.9% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 79.3% between them, down from 99.5% — the field split more ways.

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