Judy Rebick responds here.
Most Canadians assume that the federal Green Party is a left-leaning political group with a socially progressive platform. That is just not so, and my guess is that it's a strategic decision: the NDP and Liberals have the environmental left pretty well sewn up, so the Green Party is trying to attract disaffected environmentalists in the Conservative party.
I first cottoned on to the right-wing leanings of the Green Party during the 2004 federal election, when all they seemed to talk about was a green tax they wanted to impose to replace income tax - which struck me as irresponsible and crazy. Their idea was to do away with our progressive tax system in which richer people pay higher marginal tax rates than poorer people, and replace it with a regressive tax system based solely on how much energy we consume and how much we pollute. Their plan would have significantly reduced taxes for corporations and the rich and increased the tax burden on the poor.
As wikipedia currently says, "The direction of the 2004 platform ...was perceived as shifting from a centre-left to a centrist stance or even centre-right position. An emphasis on a green tax shift which favoured partially reducing income and corporate taxes (while increasing taxes on polluters and energy consumers) created questions as to whether the Green Party was still on the left of the political spectrum, or was taking a more eco-capitalist approach by reducing progressive taxation in favour of regressive taxation."