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Chennai: A highest ever 85 percent voter turnout has been recorded in the Tamil Nadu Assembly elections -2026, a significant increase from the 73 percent recorded in the 2021 elections. This raises a crucial question: Is there a correlation between increased voter turnout and a change in government?

Tamil Nadu voter turnout by the numbers

Tamil Nadu has a total of 5,73,43,291 registered voters. Of these, approximately 4.87 crore voters exercised their franchise today. The highest voter turnouts were recorded in Karur (92.64 percent), followed by Salem (90.70 percent), Dharmapuri (90.14 percent), Erode (90.10 percent), and Namakkal (90 percent).

A historical overview of voter turnout and government changes

An analysis of past Tamil Nadu Assembly elections reveals a complex relationship between voter turnout and government formation:

• 1951 (54.75%) – Congress government led by Rajaji formed.

• 1957 (46.56%) – Congress government led by Kamaraj formed.

• 1962 (70.65%) – Congress government continued.

• 1967 (76.57%) – Change of government; DMK won for the first time.

• 1971 (72.10%) – DMK government continued.

• 1977 (61.58%) – Change of government; AIADMK won for the first time.

• 1980 (65.42%) – AIADMK government continued.

• 1984 (73.47%) – AIADMK government continued.

• 1989 (69.69%) – Change of government; DMK won.

• 1991 (63.84%) – Change of government; AIADMK won. Jayalalithaa became Chief Minister for the first time.

• 1996 (66.95%) – Change of government; DMK won.

• 2001 (59.07%) – Change of government; AIADMK won.

• 2006 (70.82%) – Change of government; DMK won.

• 2011 (78.01%) – Change of government; AIADMK won.

• 2016 (74.24%) – AIADMK government continued.

• 2021 (72.73%) – Change of government; DMK won.

• 2026 (85% as per early estimates) – Results awaited.

What does the data reveal?

Generally, there is a prevailing notion that a change of government tends to occur when voter turnout increases. Past election results have demonstrated that a wave of dissatisfaction with the incumbent government often motivates a larger number of people to cast their votes. However, history also shows instances where a change of government occurred despite low voter turnout, as well as instances where the incumbent government retained power despite high turnout. Notably, in the 2021 election, the AIADMK government was ousted and the DMK came to power even though voter turnout had declined.

The SIR factor

The Systematic Inclusion and Removal (SIR) process stands out as a key reason for the increase in voter turnout observed in this election compared to the previous one. Following the SIR operations conducted this time, approximately 70 lakh voters were removed from the rolls. Consequently, the total number of registered voters dropped to 5.73 crore. In the previous election, 4.63 crore voters had cast their ballots; in this election, that figure rose to 4.87 crore—an increase of approximately 25 lakh voters. Political observers note that since the SIR exercise played a significant role in the rise in voting percentages, one cannot simply assume that the increase in the absolute number of votes cast will necessarily lead to a change in government.