Complex sentence: She is a member of the Ontario New Democratic Party, was a member of the Ontario cabinet when Bob Rae was Premier of Ontario and, in opposition served as the party's critic for the Ministry of the Environment, Women's Issues and Democratic Renewal.
Split into simpler sentences: She is a member of the Ontario New Democratic Party, was a member of the Ontario cabinet when Bob Rae was Premier of Ontario. In opposition she served as the party's critic for the Ministry of the Environment, Women's Issues and Democratic Renewal.