Former member of parliament, former leader of the Progressive Conservative Party of Ontario, and Brampton, Ontario Mayor Patrick Brown also ran for the position, but was disqualified in early July due to his campaign's alleged violations of the financial provisions of the Canada Elections Act.

In addition, there have been reports that Patrick Brown's bid in the leadership race was a target of foreign interference from the Indian government, due to his affiliation with Khalistani-separatist groups based in Canada.

[9] In November 2021, Senator Denise Batters launched an internal party petition to review O'Toole's leadership.

In the letter, Benzen criticized O'Toole's reversal on repealing Liberal Prime Minister Justin Trudeau's carbon tax and assault weapons ban.

[15] Immediately following his removal the Conservative caucus voted by secret ballot to appoint Candice Bergen as interim leader.

[43] Ballots were mailed to Conservative party members in late July or early August with the results being released on September 10.

[45] On March 30, 2022, concerns arose that the party's membership lists may have been compromised and used to make fake donation pledges.

[46] Melanie Paradis, a former staffer to Erin O'Toole, posted a warning to Twitter about the alleged breach, saying that she was contacted about a $120 donation pledge she never made.

[50] On April 12, 2022, Poilievre raised concerns of potential fraud through the use of prepaid credit cards to purchase party memberships.

[52] On July 5, 2022, Patrick Brown was disqualified from the race by the party's Leadership Election Organizing Committee.

In a statement, Ian Brodie, the chair of the committee, said that the disqualification was recommended by the party's chief returning officer after receiving information on alleged violations of the financial provisions of the Canada Elections Act by Brown's campaign.

[54] In June 2024, National Security and Intelligence Committee of Parliamentarians released a report stating that there was foreign interference in this leadership race by the governments of India and China.

[55] The Toronto Star reported that foreign interference done by the government of India and also Sri Lanka due to their opposition to Patrick Brown and his relationships with their diaspora.

On September 10, 2022, the Conservative Party announced that Pierre Poilievre had won the election in the first round with 68% of points.

The margin of his victory was also the largest in any seriously contested leadership election for a Canadian conservative party, exceeding the 66.7% of the delegated vote that George A.

The only other candidate to win a plurality in any ridings was Jean Charest, whose support disproportionately came from Quebec, which had fewer voting Conservative Party members than Western Canada; this allowed Charest to get, in turn, a slightly higher percentage of points than votes, though not as extremely disproportionate as Belinda Stronach's in 2004, who also received much support in the East.

[62][73] The Independent Press Gallery of Canada debate was cancelled due to an insufficient number of candidates attending.

[76] In addition to the debates, there was also a candidate's forum held by seven Greater Toronto Area Conservative electoral district associations in Burlington, Ontario on May 1, 2022.

[170][171] Abraham attended high school in Abbotsford, British Columbia, before completing bachelor's degree in business and English at Trinity Western University.

[175][176] Abraham later said that he had met the financial and signature requirements, but that after submitting his application he was told that he had been "deemed ineligible" by the party.

[80] Before entering politics, Alleslev was an air force officer and corporate manager, having worked for IBM and Bombardier.

[183] On April 29, 2022, Alleslev announced that she was withdrawing from the leadership election having failed to raise $300,000 required to pay the entry fee and deposit by that deadline.

[207] Singh briefly sought the Conservative leadership in 2020 but withdrew early after failing to satisfy the application criteria.

[83][better source needed] Polls were also conducted to garner the prospective voting intentions of the public for the various political parties under each leadership candidate in a general election.