13. Simla

Bharatiya Jana Sangh held the seat; the winning margin narrowed from 34.5% to 3.9%.

• Won on a lower shareIts own vote share fell 18.8% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 80.8% between them, down from 87.8% — the field split more ways.

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