When Lalu Prasad became the Chief Minister of Bihar, an ambitious Nitish Kumar broke ranks with him within a few years and joined hands with BJP.
At that time, BJP was a pariah of Indian politics in the aftermath of the demolition of Babri structure but the eagerness to somehow get to the top post prompted Nitish Kumar to completely overlook the communal charges that were being leveled against the BJP. The ‘Nitish-BJP' alliance was termed as ‘opportunistic' and ‘unholy' by his political opponents including Lalu Prasad but Nitish refused to pay any attention to such accusations at that time.
Lalu Prasad and his wife Rabri Devi ruled the state for 15 long years while Nitish Kumar was waiting in the wings. It was in 2005 that Nitish Kumar finally succeeded in dethroning RJD from power. With the support of BJP, Nitish took over the reins of the state.
Lalu -Rabri had managed to rule Bihar for 15 years with a solid Yadav-Muslim votebank. After becoming Chief Minister, Nitish tried to replicate this model with his own EBC- Muslim Vote bank.