[1] McRobb entered public life to protect Aishihik Lake from further hydroelectric projects.
[2] McRobb was re-elected as a member of the New Democrats in the 2000 and 2002 Yukon elections, and served as Opposition House Leader and New Democrat caucus critic for Tourism, Energy, Mines and Resources, Transportation, Information, and Communications, the Yukon Development Corporation, and the Yukon Energy Corporation.
[3] In 2006, McRobb was expelled from the New Democrat caucus by then-leader Todd Hardy when it was discovered that McRobb and his colleague, Mayo-Tatchun MLA Eric Fairclough, had been publicly consulting constituents about considering quitting the New Democrats for the Liberals due to Hardy's isolated decision-making and a lack of faith in his leadership.
During the 32nd Assembly, McRobb served as the Opposition House Leader, as well as the Liberal critic for Energy, Mines and Resources, Highways and Public Works, and the Yukon Energy Corporation and the Yukon Development Corporation.
[7] During his tenure in office, McRobb had developed a reputation of a political attack dog, who the media noted would "occasionally... over-reach, with accusations never quite substantiated in fact.