Madhya Pradesh chief Minister Shivraj Singh Chouhan has congratulated Prime Minister Narendra Modi and BJP president Amit Shah on BJP's victory in Assam and its better performance in other states. He said, the party got massive support in the leadership of Mr. Modi in Assam and people created a new history there. He also lauded efforts of Mr. Shah and party workers for good performance of the BJP in Assam, West Bengal and southern states.