How accurate were 2021 exit polls in Tamil Nadu, Kerala and Assam?

Most exit polls got the outcomes nearly right in Tamil Nadu, Kerala, and Assam in 2021. In Tamil Nadu, they projected around 166 seats for DMK alliance, which won 159/234 seats. In Kerala, they projected around 82 seats for the Left Democratic Front, and it won 99/140 seats. In Assam, they predicted 71 seats for NDA, which secured 75/126 seats.