University of the Western Cape political analyst Keith Gottschalk says it was only a matter of time before the DA removed Cape Town Mayor Patricia De Lille. He says she has been at loggerheads with DA leaders in recent months. Gottschalk says the party was trying to figure out a way to let her go without her being able to challenge its decision in court. The DA's Federal Executive Council revoked De Lille's membership this morning saying she went on a public platform and signalled her intention to resign. Gottshalk explains why De Lille has to leave her mayoral position. "Once you've ceased to be a member of your political party you no longer a ward councillor, if you elected on proportional representation, so you automatically are removed as a Mayor. If De Lille is representing a ward, ofcourse she would remain a ward councillor. If she's not a party member any longer, it means the DA does not need to recall her because she's automatically lost any positions", added Gottschalk.