166. Shyampukur

All India Trinamool Congress held the seat; the winning margin narrowed from 21.5% to 11.3%.

• Won on a lower shareIts own vote share fell 12.2% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 80.3% between them, down from 94.4% — the field split more ways.

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