Election Commission will announce poll dates for Tamil Nadu, Kerala, West Bengal, Assam and Puducherry later today.
The states are due for elections in April-May.
This is the first major set of elections to be held in the middle of the coronavirus pandemic after the Bihar election.
Polls are to be held for 294 seats in West Bengal, 234 seats in Tamil Nadu, 140 seats in Kerala, 126 seats in Assam and 30 seats in the Union Territory of Puducherry.