58. Dibrugarh

Indian National Congress held the seat; the winning margin narrowed from 46.1% to 6.0%.

Boundaries were redrawn between 1971 and 1977 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 8.5% — it held because the rest of the vote was more divided.
• New challengerBLD (BLD) finished second with 44.3% — it did not contest here in 1971.
• Vote consolidatedThe top two candidates took 94.6% of the vote between them, up from 71.4% — a tighter two-way contest.

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