15. Dhaka

Indian National Congress held the seat; the winning margin narrowed from 7.0% to 5.2%.

• Won on a lower shareIts own vote share fell 9.5% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 28.0% — it did not contest here in 1969.
• Vote fragmentedThe top two took only 61.2% between them, down from 78.4% — the field split more ways.

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