229. Bikramganj

Indian National Congress held the seat; the winning margin narrowed from 23.2% to 13.9%.

• Won on a lower shareIts own vote share fell 7.5% — it held because the rest of the vote was more divided.
• New challengerSOC (SOC) finished second with 25.2% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 64.3% between them, down from 69.9% — the field split more ways.

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