171. Champdani

Communist Party of India (Marxist) held the seat; the winning margin widened from 17.4% to 21.2%.

• Won on a lower shareIts own vote share fell 10.8% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 74.5% between them, down from 100.0% — the field split more ways.

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