13. Muthialpet

Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 24.5% to 13.7%.

Boundaries were redrawn between 2006 and 2011 — the comparison is matched by name and is indicative only.

• Won on a lower shareIts own vote share fell 10.7% — it held because the rest of the vote was more divided.
• Vote fragmentedThe top two took only 81.9% between them, down from 92.6% — the field split more ways.

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