Section 27O(1) in Conduct of Elections Rules, 1961
(1)The name of the proxy appointed by a classified service voter under sub-rule (3), or, as the case may be, under the second proviso to sub-rule (4), of rule 27-N shall be intimated by him to the returning office as soon as may be after such appointment is made, and such intimation must reach the returning officer not later than the last date for making nominations for the earliest election in the constituency after such appointment.