21. Lawspet

Indian National Congress held the seat; the winning margin narrowed from 60.1% to 25.0%.

• Won on a lower shareIts own vote share fell 18.3% — it held because the rest of the vote was more divided.
• New challengerDravida Munnetra Kazhagam (DMK) finished second with 35.4% — it did not contest here in 1980.

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