155. Jamtara

Indian National Congress held the seat; the winning margin held roughly steady from 8.6% to 8.5%.

Boundaries were redrawn between 1972 and 1977 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 4.7% — it held because the rest of the vote was more divided.
• New challengerJanata Party (JNP) finished second with 26.4% — it did not contest here in 1972.
• Vote fragmentedThe top two took only 61.2% between them, down from 70.6% — the field split more ways.

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