"Modi's ignorance of Indian history, of the history of even Bhartiya Jang Sangh is something, which people have now understood," he told PTI in an interview during a campaign trail in Rajgarh, a Congress strong-hold represented by Singh twice in the past.
Asked about Chouhan's defamation notice to Congress leadership over "defamatory" advertisements against his family, the AICC general secretary said that he would prove the charges of personal corruption against the Chief Minister's family in court.
Singh, who was Chief Minister of the state for ten years before the BJP then led by Uma Bharti in the state replaced Congress here in 2003, also says that the "hype" about Shivraj model of development is not matched by facts.