Stepping up attack on Prime Minister Manmohan Singh,BJP said if he could not contest the Lok Sabha elections and participate in a television debate with L K Advani due to health reasons,then how will he lead the nation. "Manmohan Singhji is neither ready to fight the election nor ready for a TV debate with our Prime Ministerial candidate L K Advani. His illness is being cited as an excuse," senior BJP leader V K Malhotra said. "If he is ill and can not even come for a TV debate then how can he become Prime Minister of the country," he said. Malhotra said Singh contested the Lok Sabha elections just once and he was defeated then. Advani yesterday challenged Singh to a live TV debate similar to the practice in the US where rival political leaders take on each other. Reacting to the challenge,Congress spokesperson Jayanti Natrajan had said the BJP seems to be obsessed with everything in US. However,she said it was upto the Prime Minister to respond to the challenge. The senior BJP leader said the Congress is in shambles after many key allies deserted the party in the last couple of days.