"Akhilesh Yadav has been appointed state president by National President Mulayam Singh Yadav," SP National General Secretary Ramgopal Yadav was quoted as saying in a release here.
The party's central parliamentary board has also been re-constituted by the party supremo.
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Besides Mulayam, brothers Ramgopal Yadav and Shivpal Yadav and son Akhilesh, other members of the parliamentary board are Mohd Azam Khan, Kiranmoy Nanda, Ravi Prakash Verma and J Antony.
Two parliamentary board members, Mohan Singh and Brijbhushan Tiwari, have been replaced by Shivpal and Antony, party sources said.