221. Ambasamudram

Communist Party of India (Marxist) held the seat; the winning margin widened from 2.7% to 6.5%.

• New challengerIndian National Congress (INC) finished second with 40.9% — it did not contest here in 1977.
• Vote consolidatedThe top two candidates took 88.3% of the vote between them, up from 68.0% — a tighter two-way contest.

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