"For those who saw in him (Kumar) a potential challenger to PM Modi, the move was a let-down. But those who were of the view that he had begun to compromise on governance in his zeal to take on Modi would feel he was right," Prashant Kishor said.
Priyanka Gandhi Vadra formally entered politics on Wednesday with the Congress appointing her general secretary for Uttar Pradesh East in a move reflecting the party's intent to go full throttle in the state ahead of the general elections.
Prashant Kishor was inducted into the JD(U) in September last year and elevated to the post of national vice-president weeks later triggering speculation that he was being thought of by Kumar as his political heir.
There was speculation in political circles in Bihar that the former BJP poll strategist, who played a role in Narendra Modi's party securing an absolute majority in the 2014 general elections, would contest 2019 Lok Sabha polls.