Tamil Nadu’s recent Special Intensive Revision (SIR) of the electoral roll shows about 2.6 lakh more women than men were deleted from the draft list. In total, 97.3 lakh names were removed. The deletion includes more than 49.9 lakh women and 47.3 lakh men. This gender gap isn’t new. A similar case happened in Bihar where more women voters were removed. But Tamil Nadu started with more women voters than men. In January 2025, women outnumbered men by over 12 lakh. Before the SIR process, the difference was 13 lakh, which dropped to 10.4 lakh after the revision. Now, women voters are about 2.77 crore while men voters stand at 2.66 crore. Some constituencies saw over 55% of deletions being women, like Vedaranyam and Tiruvarur. Analysis shows marriage-related migration affects these numbers. Women made up 55% of deletions due to permanent shifting or not residing at the address. They were fewer among deletions for "deceased" and duplicates. This means young women, especially ages 18-39, were mainly deleted due to migration, likely from marriage moves. The gender bias in voter list changes shows how marriage and migration influence electoral rolls in Tamil Nadu.