More votes bode ill for incumbents? Debunking 'conventional wisdom' on turnouts
Kerala, Puducherry, and Assam all recorded higher turnout than in 2021. Seven decades of election data suggest that turnout alone is a weak guide to whether ruling parties survive.
Voters in Kerala, Puducherry, and Assam pushed turnout to about 78, 90, and 86 per cent, respectively, on Thursday. Each was above the 2021 vote, India's Election Commission said by 1.30 pm on Friday. By the time the numbers landed, many poll watchers had already reached an old diagnosis: higher turnout means voter anger, and voter anger means the ruling party loses.
Seventy years of data from these states and more show that this diagnosis is mostly wrong.
Across 56 Assembly elections in Kerala, Puducherry, Assam, Tamil Nadu, and West Bengal between 1957 and 2021, the ruling party survived 52 per cent of the time when turnout rose, but only 44 per cent of the time when it fell. The eight-point gap runs counter to this “conventional wisdom”.
Professor Sanjay Kumar of the Centre for the Study of Developing Societies tested this against seven decades of data in his 2022 book, "Elections in India: An Overview," and found the link weak. Adding the 2021 results and Wednesday's three turnouts makes it weaker still.
Take West Bengal in 2011. Turnout edged up just 2.6 points to 84.6 per cent in a state where every Left Front government had been re-elected since 1977. The small uptick coincided with the biggest political earthquake the state had ever seen. The election ended the Left Front's 34-year run and put Mamata Banerjee in office with 184 seats out of 294.
Two cycles later, turnout slipped 0.7 points, and Banerjee's Trinamool Congress won 215, a landslide. Same state. Tiny turnout shifts. Opposite outcomes.
Kerala flips the "rule" even more cleanly. Of the 11 contested elections in the data, only two incumbent governments have ever held power. The other nine were thrown out, whether turnout went up, down or barely moved.
In 2021, the Left Democratic Front broke a 39-year pattern, becoming the first incumbent re-elected since 1982, and only the second incumbent ever returned to power in the state. Turnout had fallen 1.5 points. On Wednesday, it rose by about 2.3.
Tamil Nadu is a southern state. The DMK and the AIADMK have traded control almost every cycle since 1991, with turnout often swinging in the wrong direction for the conventional rule. AIADMK lost in 2021 with turnout down 1.2 points. It also lost in 2006 with turnout up 11.7 points. The pattern is alternation, not turnout.
Of the five states, only Puducherry shows any consistent rule, and it points the wrong way. Incumbents there were re-elected just 22 per cent of the time when turnout fell, but 50 per cent of the time when it rose. On Wednesday, Puducherry's turnout rose more than six points to its highest level on record.
The 2021 cycle cements the doubt. All five incumbents faced lower turnout than in 2016 in the Election Commission's numbers. Three survived: Assam's Bharatiya Janata Party, Kerala's Left Democratic Front, and West Bengal's Trinamool Congress. Puducherry's Congress fell. Tamil Nadu's AIADMK fell. There was no uniform rule.
For reporters watching the next phase of numbers coming in from Tamil Nadu and West Bengal on April 23, the data will offer a sharper question: not how high turnout went, but who turned out.
The CSDS's post-poll surveys consistently find that the more decisive shifts come from caste consolidation, gender turnout gaps, and urban-rural splits, not the headline state average.
Kumar's book offers a one-line summary that holds up well in 2026: turnout "is not a reliable predictor" of outcome. The eight-point gap in historical data points in the opposite direction of the so-called rule: Kerala almost always votes its government out, West Bengal almost never.
On May 4, when the counting begins, panels will read meaning into Wednesday's three numbers. Seventy years of data say they should wait for the full result.
Voters in Kerala, Puducherry, and Assam pushed turnout to about 78, 90, and 86 per cent, respectively, on Thursday. Each was above the 2021 vote, India's Election Commission said by 1.30 pm on Friday. By the time the numbers landed, many poll watchers had already reached an old diagnosis: higher turnout means voter anger, and voter anger means the ruling party loses.
Seventy years of data from these states and more show that this diagnosis is mostly wrong.
Across 56 Assembly elections in Kerala, Puducherry, Assam, Tamil Nadu, and West Bengal between 1957 and 2021, the ruling party survived 52 per cent of the time when turnout rose, but only 44 per cent of the time when it fell. The eight-point gap runs counter to this “conventional wisdom”.
Professor Sanjay Kumar of the Centre for the Study of Developing Societies tested this against seven decades of data in his 2022 book, "Elections in India: An Overview," and found the link weak. Adding the 2021 results and Wednesday's three turnouts makes it weaker still.
Take West Bengal in 2011. Turnout edged up just 2.6 points to 84.6 per cent in a state where every Left Front government had been re-elected since 1977. The small uptick coincided with the biggest political earthquake the state had ever seen. The election ended the Left Front's 34-year run and put Mamata Banerjee in office with 184 seats out of 294.
Two cycles later, turnout slipped 0.7 points, and Banerjee's Trinamool Congress won 215, a landslide. Same state. Tiny turnout shifts. Opposite outcomes.
Kerala flips the "rule" even more cleanly. Of the 11 contested elections in the data, only two incumbent governments have ever held power. The other nine were thrown out, whether turnout went up, down or barely moved.
In 2021, the Left Democratic Front broke a 39-year pattern, becoming the first incumbent re-elected since 1982, and only the second incumbent ever returned to power in the state. Turnout had fallen 1.5 points. On Wednesday, it rose by about 2.3.
Tamil Nadu is a southern state. The DMK and the AIADMK have traded control almost every cycle since 1991, with turnout often swinging in the wrong direction for the conventional rule. AIADMK lost in 2021 with turnout down 1.2 points. It also lost in 2006 with turnout up 11.7 points. The pattern is alternation, not turnout.
Of the five states, only Puducherry shows any consistent rule, and it points the wrong way. Incumbents there were re-elected just 22 per cent of the time when turnout fell, but 50 per cent of the time when it rose. On Wednesday, Puducherry's turnout rose more than six points to its highest level on record.
The 2021 cycle cements the doubt. All five incumbents faced lower turnout than in 2016 in the Election Commission's numbers. Three survived: Assam's Bharatiya Janata Party, Kerala's Left Democratic Front, and West Bengal's Trinamool Congress. Puducherry's Congress fell. Tamil Nadu's AIADMK fell. There was no uniform rule.
For reporters watching the next phase of numbers coming in from Tamil Nadu and West Bengal on April 23, the data will offer a sharper question: not how high turnout went, but who turned out.
The CSDS's post-poll surveys consistently find that the more decisive shifts come from caste consolidation, gender turnout gaps, and urban-rural splits, not the headline state average.
Kumar's book offers a one-line summary that holds up well in 2026: turnout "is not a reliable predictor" of outcome. The eight-point gap in historical data points in the opposite direction of the so-called rule: Kerala almost always votes its government out, West Bengal almost never.
On May 4, when the counting begins, panels will read meaning into Wednesday's three numbers. Seventy years of data say they should wait for the full result.
