Analysis of 2021 Exit Poll Accuracy in Indian States
How accurate were 2021 exit polls in Bengal, Tamil Nadu, Kerala and Assam?
The Indian Express
Image: The Indian Express
Exit polls from the 2021 Assembly elections in West Bengal, Tamil Nadu, Kerala, and Assam showed varying degrees of accuracy. The Trinamool Congress's performance in West Bengal was significantly underestimated, while predictions for Tamil Nadu and Assam were more precise. Results were announced on May 4, 2021.
- 01West Bengal exit polls greatly underestimated the Trinamool Congress's (TMC) performance.
- 02Tamil Nadu polls accurately predicted a DMK majority but slightly overestimated seat counts.
- 03Kerala exit polls correctly forecasted the Left Democratic Front (LDF) victory but missed the scale of their success.
- 04Assam exit polls were the most accurate, predicting the BJP's return to power with minimal error.
- 05Overall, pollsters showed a tendency to overestimate opposition performance across these states.
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The exit polls conducted during the 2021 Assembly elections in West Bengal, Tamil Nadu, Kerala, and Assam demonstrated varying levels of accuracy. In West Bengal, the exit polls significantly underestimated the Trinamool Congress's (TMC) performance, predicting a narrow win while the TMC secured 215 seats. The BJP was overestimated, with predictions suggesting a majority that did not materialize. In Tamil Nadu, while polls correctly indicated a DMK victory, they slightly overestimated the number of seats won, with the DMK and allies capturing 159 seats against predictions of 175 to 195 seats. In Kerala, the Left Democratic Front (LDF) was expected to win but the extent of their victory (99 seats) was underestimated, while the United Democratic Front (UDF) was overestimated. Conversely, exit polls for Assam were the most accurate, with predictions closely aligning with the BJP's actual win of 75 seats. Overall, the exit polls reflected a trend of overestimating opposition parties across these states.
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The accuracy of exit polls can influence public perception and trust in polling methodologies, affecting future electoral strategies and voter engagement.
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