The Progressive Federal Party of which Suzman was the sole Parliamentary representative between 1961 and 1973 became the Democratic Party after merging with the National Democratic Movement and the Independent Party in 1989. The Democratic Party was renamed the Democratic Alliance (DA) in 2000. The DA is currently the official opposition party of South Africa, under the interim leadership of John Steenhuisen. In November 2017, former DA leader Mmusi Maimane paid tribute to Suzman, noting that "Every value we call our own in the DA can be traced back to the principles Helen fought for over her 36-year-long career as a Member of Parliament".