42. Englishbazar

Communist Party of India held the seat; the winning margin narrowed from 22.8% to 4.9%.

• Won on a lower shareIts own vote share fell 23.2% — it held because the rest of the vote was more divided.
• Runner-up changedSecond place passed from Indian National Congress (INC) to Bharatiya Jana Sangh (BJS).
• Vote fragmentedThe top two took only 58.3% between them, down from 86.7% — the field split more ways.

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