171. Tarabganj

Indian National Congress held the seat; the winning margin narrowed from 23.2% to 9.0%.

• Won on a lower shareIts own vote share fell 11.6% — it held because the rest of the vote was more divided.
• New challengerSwatantra Party (SWA) finished second with 23.6% — it did not contest here in 1957.
• Vote fragmentedThe top two took only 56.1% between them, down from 65.2% — the field split more ways.

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