Section 46(1)

(1) When a casual vacancy occurs in the office of a member of the Standing
Committee, 5[Corporation or, as the case may be, Wards Committee shall] fill up the vacancy, as soon as
may be after, and in any case within one month of, the occurrence of the vacancy, by the election of another
councillor or 6[persons referred to in sub-clause (i) of clause (b) of sub-section (3) of section 3].