Returning to Queensland in 1868, he represented Burnett in the Legislative Assembly from April 1871 to December 1873, and was Attorney-General in the Palmer Ministry from May 1870 to January 1874.
Returning to Queensland in 1868, Bramston was elected in a by-election in Burnett on 3 April 1871 to the Legislative Assembly where he served until 8 December 1873. He was Queensland's Attorney-General in the Palmer Ministry from 3 May 1870 to 2 January 1874.