16. Ossudu

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin widened from 13.5% to 18.2%.

Boundaries were redrawn between 1974 and 1977 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 5.9% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 65.7% between them, down from 82.2% — the field split more ways.

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