Rajiv Ranjan quits as JD(U) party president, making way for CM Nitish Kumar to take charge ahead of Lok Sabha elections. Majority of JD(U) presidents have faced unceremonious exits. George Fernandes, founder president, was replaced by Sharad Yadav. RCP Singh, once confidante, was asked to step down. Lalan Singh, considered 'alter ego' of Nitish, fails to complete his tenure. Nitish takes over to save the party and strengthen its organizational base. JD(U) faces crises with shifting votes. Nitish focuses on consolidating OBC votes.Rajiv Ranjan quits as JD(U) party president, making way for CM Nitish Kumar to take charge ahead of Lok Sabha elections. Majority of JD(U) presidents have faced unceremonious exits. George Fernandes, founder president, was replaced by Sharad Yadav. RCP Singh, once confidante, was asked to step down. Lalan Singh, considered 'alter ego' of Nitish, fails to complete his tenure. Nitish takes over to save the party and strengthen its organizational base. JD(U) faces crises with shifting votes. Nitish focuses on consolidating OBC votes.