Tamil Nadu has deleted over 97 lakh electors from its voter lists. This removal is part of the ongoing Special Intensive Revision (SIR) of the electoral rolls. Analysis covered data from more than 75,000 polling stations across the state. The data revealed eight distinct and unusual patterns defining this significant cleanup. This massive update aims to keep the voter list accurate and up to date. "We have identified eight key patterns that set this revision apart," said the team presenting the analysis. The effort ensures only eligible voters remain on the lists ahead of upcoming elections.