Modi's biggest advantage is that he comes from OBC community although he has never played this card as his RSS background stops him from focusing on caste politics but every opponent of Modi is well aware of this fact. OBC leaders like Nitish Kumar are not against Modi simply because of the fear of losing minority votes. They fully realize that if Modi is given the opportunity of expanding his influence on national , he may emerge as national version of former UP Chief minister Kalyan Singh. Kalyan Singh, an OBC leader, had successfully crafted an unbeatable social engineering formula in UP that catapulted the BJP into the corridors of power in the state. It was an unbeatable combination of backward leader with full support of forward caste electorates and it worked wonders for the party in UP.