The Progressive Party made a major advance, however. In addition to Helen Suzman, re-elected for Houghton, five other members won seats including the party leader Colin Eglin. A seventh member of the caucus was elected at a by-election soon after. The United Party won 41 seats. The election also saw Harry Schwarz, leader of the United Party in the Transvaal, enter Parliament. Schwartz would soon lead a break away from the United Party and would become one of the Apartheid's more prominent opponents in Parliament, first forming the Reform Party and then joining with the Progressive Party to form the Progressive Reform Party in 1975, under the leadership of Colin Eglin.