New Delhi: Senior Congress leader P Chidambaram has described the five year rule of the Narendra Modi government as a "complete disaster", saying the BJP will not be able to form the next government and UPA-III could be a reality.

The former Union minister also said the BJP's "campaign of polarisation" is a complete failure in southern and western states and the impact it will have in northern and eastern India remains to be seen.

"We are absolutely confident that the BJP will not be able to form the government again. The government will be a non-BJP government. Obviously, the UPA that is Congress plus pre-election allies will play a big part. If there are more post election allies, I think UPA-III has a very good chance," he told PTI in an interview.