Priyanka has canceled election campaigning in Assam, Tamil Nadu and Kerala.
Mamata Banerjee has written a letter accusing the BJP of attacking democracy and constitutional federalism.
Karnataka CM Yediyurappa has wished speedy recovery of the former PM and his wife.
Earlier, CM Thackeray's son Aditya Thackeray was found infected with the coronavirus.
All programs of the NCP leader have been postponed.
83-year old Abdullah had recently taken the first jab of COVID-19 vaccine.
In the view of his rallies, strong security arrangements have been made in Puducherry.
Eight BJP workers were injured in the accident.
The voting started at 7:00 AM and will run till 6:30 PM.
Polling for the 126-seat state assembly will be held in three phases.