The BJP wants to announce today that Narendra Modi will be its candidate for prime minister, according to sources, despite taut opposition from LK Advani, the party's senior-most leader. The party's parliamentary board - its top 12 decision-makers - is expected to meet at 5 pm. A vote on Mr Modi could lay bare the fissures that he has pounded in his party. And that is something BJP chief Rajnath Singh wants to avoid.