13. Chittapur

Indian National Congress held the seat; the winning margin narrowed from 18.1% to 1.2%.

• Won on a lower shareIts own vote share fell 14.1% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 35.1% — it polled just 1.6% in 1989.
• Vote fragmentedThe top two took only 71.5% between them, down from 82.7% — the field split more ways.

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