175. Nagapattinam

Communist Party of India (Marxist) held the seat; the winning margin widened from 5.5% to 13.8%.

• Won on a lower shareIts own vote share fell 3.5% — it held because the rest of the vote was more divided.
• New challengerIndian National Congress (INC) finished second with 30.9% — it did not contest here in 1984.
• Vote fragmentedThe top two took only 75.6% between them, down from 91.0% — the field split more ways.

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