Early leadership On May 9, 2006, May entered the Green Party of Canada's
leadership race. On August 26, 2006, May won the leadership election on the first ballot. She tallied 65.3% of the votes, beating her main rival,
David Chernushenko (33.3%) and Jim Fannon (0.88%). She said one of the main platforms for the next election would be to renegotiate the
North American Free Trade Agreement (NAFTA). At the time of her election as leader, May said she intended to run in the riding of
Cape Breton—Canso in the
next federal election, although she also said she would stand in a federal
byelection if one occurred prior to the next general election. In the fall of 2006, May ran for election in
London North Centre, finishing second to
Glen Pearson of the
Liberal Party. While she lost, May's showing in this by-election was the best result, in terms of percentage, achieved by the Green Party of Canada at that time. In April 2007, during a speech by May to a
London, Ontario United Church of Canada, she condemned Prime Minister Stephen Harper's stance on climate change, comparing it to "a grievance worse than
Neville Chamberlain's appeasement of the Nazis." The statement drew criticism from the
Canadian Jewish Congress and opposition parties. While Opposition leader
Stéphane Dion refused to respond to Harper's request for him to distance himself from May and these remarks during Question Period, Dion did state to reporters outside Commons that May should withdraw the remarks, and that the
Nazi regime is beyond any comparison. May said she was having "a lousy week" because of the federal government's weak action plan on the environment, but stood by her comments. saying "I made reference to Mr. Monbiot's statement to highlight the damage being done to Canada's international reputation, something that should concern all Canadians." On March 17, 2007, May announced that she would run in the Nova Scotia riding of
Central Nova, in the 2008 federal election. The riding was held by Conservative National Defence Minister
Peter MacKay. May has explained that she chose Central Nova to avoid running against a Liberal or NDP incumbent. On April 12, 2007, Liberal Party leader
Stéphane Dion announced that the Liberals would not run a candidate in Central Nova in return for the Greens not running a candidate in Dion's safe
Saint-Laurent—Cartierville riding. There was criticism from prominent Green Party members of May's failing to support all Green candidates unequivocally during the 2008 election, as she made favourable comments about Liberal leader Stéphane Dion and said that supporters in close ridings might consider
voting strategically to attempt to defeat the Conservatives. broadcast, July 2008 May was initially excluded from the televised national leadership debate in the
2008 federal election, based on the lack of any elected Green party MPs. She argued that the TV network consortium's initial exclusion of the Green Party of Canada was "anti-democratic" and blamed it on "the decision-making of a small group of TV network executives". Eventually May was invited to attend the televised debate. May received 32 per cent of the vote in Central Nova in 2008 to MacKay's 47 per cent. Nationally, the Greens received 6.8 per cent of the popular vote.
Member of Parliament In 2010, following a survey of potentially favourable electoral districts across the country, May announced her intention to run in
Saanich—Gulf Islands, in
British Columbia against Conservative cabinet minister
Gary Lunn. National Day of Action in Ottawa, May 2011 On March 29, 2011, the broadcast consortium organizing the televised national leaders' debate for the
2011 federal election announced that it would not invite May. Despite her exclusion from the national debates, she won her riding, defeating the incumbent Gary Lunn. Nationally the Greens received 4 per cent of the popular vote. In 2012, May tabled a
Private member's bill, Bill C-442, with the aim of creating a national framework to address
Lyme disease. On December 16, 2014, Bill C-442 received
royal assent, becoming law. Bill C-442 was the first piece of Green Party legislation enacted in the history of Canada, and was passed with
unanimous consent by both houses of Parliament. The bill was introduced by May in response to the rise of lyme disease across Canada, and in recognition of the findings by groups including the
Intergovernmental Panel on Climate Change, who have noted that as a result of climate change Lyme disease is beginning to spread more quickly, as the number of ticks— who serve as
vectors for Lyme disease– steadily increases. In December 2014, May presented a petition to the House of Commons by members of
9/11 Truth organizations asking the government to review the
September 11 attacks in New York. While she personally did not agree with the petition, May defended presenting it and stated "It is an obligation of an MP to present every petition submitted to them." While many MPs consider it a responsibility, House of Commons rules do not require MPs to present all petitions they receive to Parliament. May was the first MP to take a stand against
Bill C-51, on February 3, 2015,
Toronto Star National Affairs columnist
Thomas Walkom noted that, "So far, the only opposition MP with enough guts to critique the content of the Conservative government's new anti-terror bill is Green Party Leader Elizabeth May." May and fellow Green MP
Bruce Hyer tabled sixty amendments during
clause-by-clause considerations of Bill C-51 – all sixty amendments were rejected by the government. May later stated of Bill C-51, "It's not fixable. Stop it. Repeal it." On April 23, 2015, May had two
amendments to Bill C-46, the Pipelines Safety Act, accepted. These were the first Green Party amendments to a government bill ever adopted. In 2016, May gained international media attention for objecting to Conservative MP
Michelle Rempel using the word "fart" in a speech in the House of Commons. On March 23, 2018, May was arrested for
civil contempt during a demonstration against the
Kinder Morgan pipeline. Other members of the demonstration, including fellow
Member of Parliament Kennedy Stewart, were also arrested concerning the same incident. They were accused of violating a court order requiring those demonstrating to stay five meters back from company work sites, when they allegedly blocked the roadway. On April 9, 2018, Justice Kenneth Affleck of the
British Columbia Supreme Court recommended that May and the others arrested should be charged with
criminal contempt in relation to the alleged incident. On April 16, 2018, it was reported that special prosecutors would be overseeing the charges against May and Stewart. On May 14, 2018, the special prosecutor handling May's case told Justice Affleck that the province was pursuing a criminal contempt of court prosecution against May. On May 28, 2018, May pleaded guilty to criminal contempt of court and was sentenced to pay a fine of $1,500. May has called for a doubling of Canada's greenhouse gas emission reduction targets to a 60% reduction from 2005 levels, instead of the current 30%.
Second leadership After
Annamie Paul, May's successor as Green Party leader, resigned following a period of internal tensions within the party and a poor performance in the
2021 Canadian federal election, May announced she would run in the
leadership election to replace her. Running on a joint ticket with human rights activist
Jonathan Pedneault and proposing that the party adopt a co-leadership model, May won the leadership election on November 19, 2022. As co-leadership is not formally recognized in the party’s constitution, and Pedneault served as May's deputy leader while the two sought to amend the party constitution. The proposed constitutional change was not approved due to internal disagreement and on July 9, 2024, Jonathan Pedneault resigned as deputy leader, citing personal reasons. May said she regretted the decision but confirmed that she planned to continue as leader into the
2025 Canadian federal election, and run for re-election in her Vancouver Island riding. Pedneault returned in January 2025 to serve as co-leader, pending election by party membership, which was approved on February 4, 2025. In the 2025 election, May won re-election in her riding of Saanich—Gulf Islands, becoming the party's sole representative in Parliament. On August 19, May announced her intention to resign as party leader and not lead the party into the next federal election. She voted in favour of the
2025 federal budget, helping it pass. May later stated her regret in supporting the budget. ==Controversies==