20. Nellore

Indian National Congress held the seat; the winning margin narrowed from 48.8% to 34.7%.

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

• New challengerCommunist Party of India (Marxist) (CPM) finished second with 31.4% — it did not contest here in 1971.
• Vote consolidatedThe top two candidates took 97.6% of the vote between them, up from 83.5% — a tighter two-way contest.
• TurnoutTurnout fell 5.0% to 54.7%.

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