183. Arambagh

NCO held the seat; the winning margin narrowed from 30.9% to 28.5%.

• Won on a lower shareIts own vote share fell 5.5% — it held because the rest of the vote was more divided.
• New challengerIndian National Congress (INC) finished second with 26.6% — it did not contest here in 1971.
• Vote fragmentedThe top two took only 81.8% between them, down from 90.3% — the field split more ways.

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