Little is known about Jacobus Sauer's early life. He was the son of a
landdrost in the
Orange Free State, and attended South African College School before practicing as an
attorney for several years in Cape Town. attacks his work in Basutoland under the title
"When Jamie Comes Marching Home!" He was first elected to the
Parliament of the Cape of Good Hope under the
Molteno Ministry in 1875 to represent the constituency of Aliwal North, and served continuously until 1904. He was then re-elected to serve from 1908 until his death. In total, he sat in the
Cape Parliament for over twenty years. At the beginning of his career, he was greatly influenced by the pragmatic and racially inclusive policies of early Cape parliamentarians such as
Saul Solomon, and he adhered to the principles of this "Cape Liberal Tradition" for the remainder of his life. The Cape Colony had recently acquired a sizable Xhosa population in its expanding frontiers. Initially, due to their inaccessibility in the remote frontier mountains, most rural
Xhosa people of the Cape failed to register as voters. In the 1880s, Sauer engaged himself in an intense campaign to mobilise and register the Xhosa voters, who light-heartedly dubbed him with the nickname of "Government Sauer". In 1883, he invited the Xhosa politician and journalist
John Tengo Jabavu to stand for Parliament in Cape Town, but Jabavu declined. Sauer was also a strong supporter of women's suffrage and the local Cape
Women's Enfranchisement League. On 4 July 1907, together with fellow MPs Dr
Antonie Viljoen and
James Molteno, he supported the Cape's first parliamentary attempt to give women of all races the vote. As a politician he was described as
"solid, cautious and well-balanced", and although English was not his mother-tongue, he was described as a strong and forceful orator. His lifelong political alliance with John X. Merriman led to them being dubbed as "political Siamese twins", with Sauer's down-to-earth practicality complementing Merriman's erratic excitability. Sauer was a minister in the governments of the
Prime Ministers
Thomas Scanlen (1881–84),
Cecil Rhodes (1890–93),
W P Schreiner, (1898-1900),
J X Merriman (1908-1910), and in the national government after union. In 1876, early on in his political career, he broke with
Prime Minister Gordon Sprigg after taking issue with Sprigg's discriminatory "native policy". However he returned to government in 1881 as "Secretary for Native Affairs" in the cabinet of Prime Minister Thomas Scanlen. He was invited to form a government after Sprigg's second Ministry collapsed in 1890, but declined. ==Opposition to Rhodes and leadership of the South African Party==