Confidante Sushil Kumar Modi is out, BJP will try to set the rules and the RJD is trying to poach NDA allies.
RJD said the "mandate for change was against the NDA".
The Bihar election verdict is the best result that secular and democratic citizens could have expected.
'Time' quoted analysts as saying that rather than blaming Modi for the chaos of the lockdown and economic crisis, it appears many voters instead blamed Nitish Kumar.
Prime Minister Narendra Modi took a dig at West Bengal chief minister Mamata Banerjee without naming her.
BJP leaders insist that Nitish will once again be CM, but the veteran JD(U) leader is unhappy with the turn of events.
The party won less seats this time than in 2015, when it contested in in 41 seats.
While the NDA won 125 seats, the Mahagathbandhan won 110. RJD was the single-largest party with 75 seats.
The CPI (ML) looks set to win 12 out of the 19 seats it is contesting, making it the party with the highest strike rate this election.
The Election Commission also listed differences between counting of votes now and the conventional counting process.