Margo was a Foundation member of the Greens (WA) in January 1990 after joining one of its predecessors, the WA Greens, the previous year.
In the 1980s, Margo, her husband and their two sons were very active in the campaign to stop the logging of WA’s old growth forests. Over her 30 years membership she has been Co-convenor of the Greens (WA) twice as well as Secretary. Margo has also held the position of National Secretary of the Australian Greens. Her main commitment in the Party has been as the Convenor of the Policy Working Group- a position she took up in early 2000.
Margo and her husband Mike were key members since 1990 of the Canning Regional Group and then the Burt-Canning Regional Group. She has fulfilled the role of polling booth coordinator for many elections, as well as staffing polling booths on polling days. Margo and Mike are both Life Members of the Party.