Shah arrived at Guwahati last night and was welcomed at the airport by state Chief Minister Sarbananda Sonowal and others.
He flew in a special helicopter to Sitapur in Chirang this morning. He is being accompanied by state Health Minister Dr Himanta Biswa Sarma and state BJP chief Ranjeet Kumar Das.
Mr Shah is scheduled to leave for West Bengal from Rai’s house after lunch.
Rai has a large number of followers both in Assam and West Bengal and could play an important role in ensuring the BJP’s victory in the neighbouring state in ensuing state polls.