Bihar Chief Minister Nitish Kumar and his party are likely to insist this weekend that their ally, the BJP, disclose whether Narendra Modi will be its nominee for Prime Minister. Sharad Yadav, who is the other powerhouse in Mr Kumar's party, the Janata Dal (United) today, reiterated that its alliance with the BJP "is based on secular credentials and secularism", flagging yet again that Mr Modi is unacceptable for the country's top job.