Mirzapur, Dec 7: Former Uttar Pradesh chief minister Kalyan Singh today attacked Prime Minister Atal Behari Vajpayee saying the latter's concept of `Hindutva' revolved around a particular caste and the backwards were still untouchable for him.``Vajpayee's concept of Hindutva revolves around a particular caste and backwards are still untouchable for him,'' Singh told reporters here.On BJP's reverses in the Lok Sabha polls in the state, the suspended BJP leader said he had opposed giving tickets to some 25 candidates. ``Barring a few, all these candidates, including Vedanti Maharaj from Machhlishahr, lost in the polls," he said.On his likely expulsion from BJP, the former chief minister said a decision to this effect was being delayed as the party did not want him to become a `hero' on December six, the seventh anniversary of the Babri Masjid demolition yesterday.Singh criticised the BJP leaders in the state for not `giving due care' to strengthen the party organisation and said Congress-like culture prevailed in the party. He did not clarify what he meant by `Congress culture".Meanwhile, BJP general secretary K N Govindacharya today said in Varanasi that a decision on Singh's fate would be taken on the basis of the party's disciplinary committee report but the party was ``left with no option but to expel'' him.``The party is left with no option but to expel Singh after his continued utterances against the BJP and its leadership," Govindacharya who is also in-charge of the BJP's Uttar Pradesh affairs told reporters here.Alleging that Singh was playing ``opportunistic and casteist politics for his personal gains," Govindacharya said the ``Kalyan Singh episode will have no impact on the life of the Ram Prakash Gupta government. It will complete its full term".He dismissed Singh's charge that BJP had deviated from its basic principles and ideology, saying the party was following the national agenda for governance as formed along with its alliance partners.``Kalyan was party to the formation of the national agenda," he added.