103. Perundurai

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 7.6% to 4.8%.

• Won on a lower shareIts own vote share fell 9.8% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 65.2% between them, down from 82.0% — the field split more ways.

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