There was no "pressing need" for him to join politics at this moment, the actor told reporters at the Chennai airport.
"There is no pressing need for a foray into politics right now," said the lead actor of several Hindi and southern blockbusters.
Rajinikanth, who commands a huge fan following, also said he would meet his supporters after his birthday next month.
"I will meet my fans only after my birthday (December 12)," the actor said on returning to the city yesterday after visiting the Sri Raghavendra Swamy Mutt in Mantralayam in Andhra Pradesh.
His cinema colleague Kamal Haasan has also spoken about a possible political career. He said he would be willing to work with Rajinikanth if the superstar ever decided to enter politics.
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