Quoted without comment, from "The Fortunes of Africa"

Page 581:

With relentless propaganda, the Nationalists played on the electorate's racial anxieties at every opportunity. They paid particular attention to working-class Afrikaners facing competition from cheap black labour. By 1948 about half of the white Afrikaans-speaking population lived in urban areas. A large proportion were miners, railwaymen, transport, factory and steel workers for whom the Nationalist slogan of apartheid, promising protection of white jobs, had a potent appeal....

The National Party won the 1948 election by a narrow margin. In his victory speech, Malan declared: 'Today South Africa belongs to us once more. For the first time since Union, South Africa is ours, and may God grant that it will always remain our own.'