21. Chandpur

Independent held the seat; the winning margin widened from 0.6% to 2.3%.

• Won on a lower shareIts own vote share fell 12.7% — it held because the rest of the vote was more divided.
• Runner-up changedSecond place passed from Indian National Congress (INC) to Communist Party of India (CPI).
• Vote fragmentedThe top two took only 45.7% between them, down from 72.8% — the field split more ways.

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