"Any alliance with Nitish Kumar is totally ruled out. The door is shut with a capital lock," Communications and IT Minister Ravi Shankar Prasad told a press conference here.
He said the merger of the Janata parivar would have no impact on the Bharatiya Janata Party's prospect in the coming election.
"Alliance or no alliance in Janata Parivar, people will vote for us," added the BJP leader.
Asked who will be the BJP's chief ministerial candidate in Bihar, Prasad said the party's parliamentary board will take a call when needed.
"Let Lalu Prasad and Nitish Kumar decide first who will be the CM candidate on their side," he added.