It's also not that Modi's rivals are not aware of this. Nitish Kumar,Modi's bête-noire and Bihar Chief Minister who also has Prime Ministerial ambitions, is fully aware of Modi's possible emergence as the most preferred PM candidate for OBCs across the country. It should be recalled that Kurmis, Nitish Kumar's own castemen, consider Sardar Patel as one of them and have high regard for Modi as he has always presented himself as true inheritor Patel's legacy. This is one reason why Nitish is not favourable towards Modi's PM candidature as it can result in his PM ambitions vanishing altogether.This is his biggest concern, even more than the fear of losing Muslim vote bank that constitutes around 16 percent of electorate in Bihar.