67. Biswanath

Indian National Congress held the seat; the winning margin widened from 45.6% to 48.0%.

• Won on a lower shareIts own vote share fell 3.6% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 21.2% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 90.4% 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.