That is what everybody in this Country think. Modi is the most popular Leader in this Country. None in the near future can replace him

According to a recent poll it could be Yogi. 

Good. Yogi is capable enough .

Nobody can take the place of Modi This is the first Prime minister who is living for India.He has made a place in the public heart which no one can remove.

Its true Modi has its own capability what knowledge he have that can not be replaced by other. He is self motivator to motivate our country to become powerful.

Above all Modi has been accepted by the Majority  of the People of this Country. The reason is his people friendly schemes. Hence right now, there is no other Leader who can replace himm

Why Mr. Advaani fail after Bajpayee retirement I think he was doing well before Modi but after that he also down. He need to maintain his activeness. 

Forget about  all . ,Right now None can replace Modi. I am of the opinion these stalwarts like Amit Shaw  will guide and teach Yogi, all the necessary aspect required

Its just beginning as Modi said previously he need minimum 10 year to do all he has target.

Definitely. modi's  stay willmuch up to 2019 ay be more