19. Thattanchavady

Indian National Congress held the seat; the winning margin narrowed from 40.3% to 9.8%.

• Won on a lower shareIts own vote share fell 26.8% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 76.1% between them, down from 99.1% — the field split more ways.

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