23. Dhubri

Indian National Congress held the seat; the winning margin narrowed from 64.8% to 1.9%.

Boundaries were redrawn between 1972 and 1978 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 46.0% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 61.2% between them, down from 90.3% — the field split more ways.

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