"It is a strange situation. They have a Prime Minister but do not have a candidate for Prime Ministership (who will lead in the coming polls)," Singh said in his address at the National Council meeting here to finetune party's strategy for coming elections.

The Council, meeting for the first time after Advani was anointed Atal Bihari Vajpayee's successor, saw the party chief singing paeans for the Leader of the Opposition in the Lok Sabha and asserting that BJP has got a headstart in the matter of leadership and campaign.

"I would like to ask the UPA, who will be their candidate for the post of Prime Minister in the forthcoming Lok Sabha elections? I don't think the Congress will be able to answer this question," he added.

Singh garlanded Advani amid a standing ovation from the around 4,000 delegates present at the Ram Lila grounds with senior leaders including Murli Manohar Joshi joining the chorus but absent was party patriarch Vajpayee, who is unwell.

The BJP chief wondered that while the Congress is talking about single party rule in the country, why it was not clear about a single centre of authority within the government of their party.