Section 17(6)(b) in The U.P. Kshettra Panchayats And Zila Panchayats Adhiniyam, 1961
(b)elected members, who shall be chosen by direct election from the territorial constituencies in the Panchayat area and for this purpose the Panchayat area shall be divided into territorial constituencies in such manner that, so far as practicable, each such territorial constituency shall have a population of fifty thousand: