10. Thousand Lights

Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 17.1% to 6.8%.

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 20.3% — it held because the rest of the vote was more divided.
• New challengerIndependent (IND) finished second with 30.3% — it polled just 1.1% in 1971.
• Vote fragmentedThe top two took only 67.5% between them, down from 97.7% — the field split more ways.

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