Otta Helene Maree, known as Helen Zille, is a South African politician. She has served as the Chairperson of the Federal Council of the Democratic Alliance since 20 October 2019. From 2009 until 2019, she was the Premier of the Western Cape province for two five-year terms, and a member of the Western Cape Provincial Parliament. She served as Federal Leader of the Democratic Alliance from 2007 to 2015 and as Mayor of Cape Town from 2006 to 2009.

The Democratic Alliance is a South African political party and the official opposition to the ruling African National Congress (ANC). The party is broadly centrist, and has been attributed both centre-left and centre-right policies. It is a member of Liberal International and the Africa Liberal Network. The DA traces its roots to the founding of the anti-apartheid Progressive Party in 1959, with many mergers and name changes between that time and the present. The DA ideologically shows a variety of liberal tendencies, including social liberalism, classical liberalism, and conservative liberalism.