Bradford was elected territorial delegate in 1864 and served in the 39th Congress, March 4, 1865 to March 3, 1867. After his term, he resumed the practice of law in Pueblo, Colorado. In 1868, he was again elected as territorial delegate, and he served in the 41st Congress, (March 4, 1869 to March 3, 1871.
Bradford was elected as a territorial official in 1864 and served in the 39th Congress from March 4, 1865 to March 3, 1867. Upon finishing his term, he resumed practicing law in Pueblo, Colorado. He was re-elected for another term as territorial delegate in 1868 and served in the 41st Congress from March 4, 1869 to March 3, 1871.