5. Trikkarpur

Communist Party of India (Marxist) held the seat; the winning margin narrowed from 14.5% to 5.7%.

• Won on a lower shareIts own vote share fell 7.1% — it held because the rest of the vote was more divided.
• New challengerIndian National Congress (INC) finished second with 44.4% — it did not contest here in 1982.
• Vote fragmentedThe top two took only 94.6% between them, down from 100.0% — the field split more ways.

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