Tamil Nadu & Bengal Election Turnout 2026: Understanding Voting, SIR Impact & Real Electoral Math

Tamil Nadu and West Bengal have recorded some of the highest voter turnout figures in recent elections, with Tamil Nadu at around 82% and West Bengal nearing 89%. However, these numbers need deeper interpretation beyond surface-level comparisons.Both states underwent Special Intensive Revision (SIR) of electoral rolls, resulting in large-scale deletions of registered voters. Tamil Nadu saw around 74 lakh names removed, while West Bengal recorded nearly 91 lakh deletions. Since turnout is calculated as a percentage of registered voters, any change in the electoral base directly affects the final figure.This explainer breaks down how turnout is calculated, how voter list revisions influence percentages, and why the same number of votes can show different turnout outcomes depending on the size of the electorate. It also highlights real participation factors such as first-time voters and political mobilisation that contribute to high turnout.