54. Lalganj South

Indian National Congress held the seat; the winning margin narrowed from 41.2% to 15.8%.

• Won on a lower shareIts own vote share fell 3.4% — it held because the rest of the vote was more divided.
• New challengerSwatantra Party (SWA) finished second with 38.8% — it did not contest here in 1957.
• Vote consolidatedThe top two candidates took 93.4% of the vote between them, up from 74.8% — a tighter two-way contest.

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