He was a New Democratic member of the Legislative Assembly of Ontario from 1975 to 1981 who represented the downtown Toronto riding of High Park—Swansea.
When he married he signed the licence as Edward Harris, but he decided to revert to his original name when his first child was born.
William Temple, founder of the group said that Ziemba played a major part in keeping alcohol out of the Bloor West area of Toronto.
[7] An outspoken and controversial politician, Ziemba spent six days in Toronto's Don Jail in 1977 for contempt of court when he refused to reveal his informant for allegations that the principals of Abko Laboratories were defrauding the Ontario Health Insurance Plan.
[8] In 1976, Ziemba also sparked an uproar in the legislature when he leaked a list of 812 doctors earning more than $100,000 a year in OHIP billings.
[11] Following his political career, Ziemba worked as a representative of the International Ladies Garment Workers Union in Toronto.