Green Party Leader Elizabeth May’s admission that she “made a mistake” by supporting the Liberal government’s budget is more than a moment of political regret it is a warning flare about trust, climate commitments, and the shifting priorities of Prime Minister Mark Carney’s government.
May’s lone vote in favour of the Liberals helped pass a razor-thin confidence motion, 170–168, sparing Canada from an election many parties weren’t ready for. She voted yes only after receiving direct assurances from the prime minister himself and from former environment minister Steven Guilbeault that the government remained committed to the Paris Agreement and that controversial tax credits for enhanced oil recovery would not appear in the budget.
Both promises were broken.
Just ten days after the budget vote, the federal government and Alberta signed a memorandum of understanding (MOU) that does the exact opposite of what May says she was promised. The agreement explicitly endorses tax credits for enhanced oil recovery a tool widely criticized by environmentalists because it subsidizes more oil production while being marketed as a climate solution.
To May and Guilbeault, these credits represent a structural contradiction: you cannot simultaneously pledge to reduce emissions while expanding the very industry driving them. Guilbeault believed it strongly enough to resign from cabinet.
Carney, however, appears to have calculated that appeasing Alberta Premier Danielle Smith was more politically valuable than honouring his commitment to a Green MP whose vote he had already secured.
May’s words are unusually blunt for a leader known for her composure:
“I don’t know if the prime minister lied, but I think he needs to consider what his word means.”
This is not merely frustration it is a condemnation of how trust is being handled at the highest levels of government.
A confidence vote is one of the most consequential acts an MP can perform. May kept her side of the bargain. The government did not.
The MOU goes far beyond enhanced oil recovery tax credits. It proposes rolling back multiple environmental restrictions introduced under the Trudeau era and seeks to revive a long-debated pipeline to the West Coast, even suggesting possible adjustments to the oil tanker moratorium.
In other words: a full-scale pivot toward petroleum interests.
Ottawa is selling this shift as necessary for investment, economic cooperation, and even emissions reduction despite the obvious contradiction in expanding oil production while claiming climate leadership.
This episode raises uncomfortable questions
- If a prime minister’s assurance in the House of Commons is not reliable, what does accountability look like?
- If a government signs a climate agreement with one hand while opening new oil pathways with the other, what does climate leadership mean?
- And if May’s support was secured under conditions that evaporated immediately after her vote, what message does that send to smaller parties whose cooperation governments rely on?
May’s conclusion is simple and damning:
“I kept my word … I will not make that mistake again.”
Alberta Premier Danielle Smith sees enhanced oil recovery as essential for prosperity and cooperation with Ottawa. That perspective is not new. But what is new is the federal government’s willingness to embrace that agenda at the expense of environmental commitments it publicly champions.
Elizabeth May’s regret should not be seen as a personal embarrassment it is a symptom of a broader political problem. Canada cannot endlessly oscillate between climate ambition and fossil-fuel expansion without consequences.
Trust, once broken, is difficult to repair and Carney’s government may soon discover that the cost of this “significant betrayal” will be far greater than one lost Green Party vote.
