Sinha said Karunanidhi was "most loved, admired and respected leader and a real role model for everybody."
The 94-year-old leader died at Chennai after prolonged illness today.
It would be apt to describe him as the "last mughul" of Indian politics, Sinha, who served as Union minister in the Atal Bihari Vajpayee ministry, said.
"Its true that the show must go on but the show will not be the same without Karunanidhi," the actor-politician said.
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