 In 1880 Kidd was elected to the New South Wales Legislative Assembly as the member for Camden; he served until 1882 and then again from 1885 to 1887, 1889 to 1895, and 1898 to 1904.Kidd was Postmaster-General in the Dibbs ministry (1891–1894).Kidd was Secretary for Mines and Minister for Agriculture from 1901 to 1904, and during his various terms was associated with the Protectionist and Progressive parties.