"The Lok Sabha election results have not been good for JD(U). The people's mandate has to be respected. So, I have tendered the resignation of my council of ministers. I had led the campaign. So, it is my duty to take moral responsibility and I must take," he told reporters after sending the resignation to Governor D Y Patil.
However, he made it clear that he had not sought dissolution of the Assembly and options were open for formation of an alternative government.
In the 243-member Bihar Assembly, JD(U) has 115 members while BJP has 89 and RJD 21. JD(U) has the support of four members of Congress, one of CPI and two independents. There are six vacancies.
Apart from the drubbing in the Lok Sabha elections in which JD(U) bagged only two of the 40 seats in the state, the chief minister was also said to be facing severe dissidence in the party over breaking relations with BJP last year after Narendra Modi was projected as prime ministerial contender.
Observers believe JD(U) may stake claim to continue in power under a new leader who is to be elected tomorrow.