231. Tirunelveli

Indian National Congress held the seat; the winning margin narrowed from 24.7% to 6.9%.

• Won on a lower shareIts own vote share fell 3.1% — it held because the rest of the vote was more divided.
• New challengerSwatantra Party (SWA) finished second with 40.8% — it did not contest here in 1957.
• Vote consolidatedThe top two candidates took 88.5% of the vote between them, up from 76.8% — a tighter two-way contest.
• TurnoutTurnout rose 20.9% to 67.6%.

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