232. Thiruvattar

Communist Party of India (Marxist) held the seat; the winning margin narrowed from 20.0% to 5.6%.

• Won on a lower shareIts own vote share fell 10.7% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 31.3% — it polled just 0.4% in 1980.
• Vote fragmentedThe top two took only 68.3% between them, down from 75.4% — the field split more ways.

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