Clearly the 2014 elections saw a Narendra Modi wave across the nation which resulted in bumper majority for BJP. This is something no other political party could win after 1984. But at the same time this was a rare wave that cannot be repeated every time.
It was more of an anti-Congress wave rather than pro-BJP wave. There may be no need for coalition this time but again it has to be remembered that Modi doesn’t have much friends within BJP and also outside BJP. The Hindutva image he has adds to further segregation.
The relations with another ally Shiv Sena has hit rock bottom while PDP of Kashmir is only continuing just like TDP for sake of funds and avoiding friction with Centre. KCR may support NDA but in return Telangana BJP will be forever reduced to second fiddle.
Hence many feel that keeping 2019 elections in mind when there may be even new allies required for NDA to form government. At a time when many view Modi as stubborn and rigid headed, he may not afford to lose a key ally and good friend like Chandrababu.
