35. Arcot

All India Anna Dravida Munnetra Kazhagam held the seat; the winning margin narrowed from 15.3% to 2.6%.

• Runner-up changedSecond place passed from Janata Party (JNP) to Indian National Congress (INC).
• Vote consolidatedThe top two candidates took 95.1% of the vote between them, up from 63.3% — a tighter two-way contest.

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