389. Tenkasi

Indian National Congress held the seat; the winning margin widened from 1.4% to 17.1%.

• New challengerNCO (NCO) finished second with 38.3% — it did not contest here in 1967.
• Vote consolidatedThe top two candidates took 93.8% of the vote between them, up from 81.6% — a tighter two-way contest.
• TurnoutTurnout fell 4.5% to 70.4%.

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