22. Nagin

JKN held the seat; the winning margin narrowed from 37.7% to 5.4%.

• Won on a lower shareIts own vote share fell 19.2% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 42.8% — it polled just 0.7% in 1983.
• Vote fragmentedThe top two took only 91.1% between them, down from 97.2% — the field split more ways.

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