The Election Commission of India (ECI) has released comprehensive electoral data tracing the voting history of Assam, Kerala, Tamil Nadu, West Bengal, and the Union Territory of Puducherry — from their first post-Independence elections to the Assembly polls held in April and May 2026. The data, published under the theme 'Chunav Ka Parv, Matdata Ka Garv', documents how voter rolls have multiplied several times over seven decades while turnout has remained among the highest in the country.

West Bengal Leads with Record 93.71% Turnout

West Bengal has posted the highest polling percentage among the five regions at 93.71% in the 2026 Assembly election — the highest recorded in the state since Independence. The state's voter base has expanded from approximately 76 lakh in 1951 to over 6.38 crore ahead of the 2026 polls. Participation remained below 50% through much of the 1950s before climbing steadily, crossing the 75% mark consistently from the late 1970s onwards in both Lok Sabha and Assembly elections.

Assam's Surge — and Its Darkest Election

Assam recorded a turnout of 86.33% in the just-concluded 2026 Assembly election, against a voter base that has grown from around 24 lakh in 1951 to more than 2.16 crore in 2026. The ECI data also flags a stark outlier: the 1983 Assembly election, held at the height of ethnic violence in the state, recorded a polling percentage of just 32%, with several constituencies posting extremely poor participation. The Commission describes 1983 as one of the most turbulent elections in Assam's history.

Tamil Nadu and Kerala: Stable, High Participation

Tamil Nadu reported a turnout of 86.03% in the latest trend captured by the Commission. The state's electorate has grown from nearly 1.59 crore voters in the 1967 election to close to 4.94 crore for the 2026 polls, with consistently high participation recorded from the 1970s onwards. Kerala recorded a turnout of 79.53% in the 9 April Assembly polls. Starting with around 58 lakh voters in 1957, the state's electorate has since crossed 2.16 crore. Kerala's polling percentage has largely remained within the high 70s and 80s across successive elections, reflecting sustained civic engagement over decades.

Puducherry Punches Above Its Weight

The Union Territory of Puducherry emerged as a standout performer, recording a turnout of 91.19% in 2026. From just over 1.71 lakh voters in 1964, its electorate has grown to nearly 8.67 lakh in 2026. Despite its comparatively small size, Puducherry has consistently delivered robust participation across Assembly elections.

What the Long View Reveals

Taken together, the ECI data underscores a broad democratisation of electoral participation across India's eastern, southern, and northeastern regions. Notably, the sharpest voter-base expansions coincide with post-liberalisation decades, when urbanisation and voter registration drives accelerated. The 2026 cycle, with West Bengal and Puducherry both exceeding 90% turnout, suggests that high participation has become a structural feature of these electorates rather than an exception. How this translates into representation and governance outcomes remains the next test for these democracies.