Aitchison to Step Down After Three Decades in Public Office, Triggering New By‑election

Liam MacKenzie, Senior Political Correspondent (Ottawa)
5 Min Read
⏱️ 4 min read

Conservative MP Scott Aitchison has announced he will resign his Parry Sound‑Muskoka seat at the close of the current parliamentary session, ending a 30‑year career that spanned municipal government, opposition criticism and a bid for the party leadership. The departure adds to a growing exodus from the Tory ranks, making Aitchison the twelfth member of Parliament to leave office since the start of the year and the eighth to quit the Conservative caucus in the past eleven months.

The End of an Era

In a resignation letter released to constituents, Aitchison described his time in public service as “the honour of his lifetime.” He thanked the people of Parry Sound‑Muskoka for placing their trust in him and pledged that he had “made you proud.” The MP highlighted the support of his staff, noting that “none of this would have been possible without you.” He concluded by urging his former colleagues to continue “championing efforts to make life more affordable for all Canadians.” Aitchison’s decision follows a career that began with 25 years as a municipal councillor and mayor of Huntsville, Ontario, before he entered federal politics as the Conservative candidate for Parry Sound‑Muskoka in 2019. He later contested the party leadership in 2022 and served as the Opposition’s housing critic, a role in which he became known for his detailed parliamentary analysis and advocacy on affordability issues.

A Growing Tory Exodus

Aitchison’s resignation marks a significant moment in the current parliamentary landscape. Since January, twelve MPs have stepped down, eight of them from the Conservative party. The exodus includes four floor‑crossings to the Liberal benches: Nova Scotia MP Chris d’Entremont left last November, followed by Ontario MPs Michael Ma and Marilyn Gladu, and Alberta MP Matt Jeneroux. Quebec MP Richard Martel vacated his seat in the summer to accept a Senate appointment, while Saskatchewan’s Cathay Wagantall and Ontario’s Larry Brock both resigned within the past month. The cumulative effect has left the House of Commons with six vacant seats, each requiring a by‑election within six months of the vacancy.

A Growing Tory Exodus

Reactions from Across the Aisle

Conservative Leader Pierre Poilievre issued a statement thanking Aitchison for his service and wishing him success in his next chapter. Poilievre praised Aitchison’s “connection to his home,” noting his work on behalf of local workers, businesses, and community funds supporting housing, food security, and mental health in Parry Sound‑Muskoka. Fellow Tory MP Michelle Rempel Garner described Aitchison as a “delight to work with” and expressed confidence that he would continue to hold the government to account on issues of affordability, immigration, and jobs.

Aitchison also earned bipartisan praise. Liberal MP Anthony Housefather posted on X that Aitchison “is a true class act and proof of what we jointly wrote in an (opinion article), ‘You can disagree without being disagreeable.’” Former Liberal MP Francesco Sorbara highlighted Aitchison’s contribution to housing debates, calling him “always a gentleman with MPs from all sides of the House.” Such cross‑party commendations underscore the respect Aitchison has garnered despite the increasingly polarised nature of contemporary Canadian politics.

By‑election Logistics and Financial Implications

With six vacancies now in the House of Commons, Elections Canada will need to organise by‑elections in each riding. The agency estimates that each contest will cost roughly CAD 2 million, though the final figure can vary based on local factors such as voter turnout and campaign intensity. The six‑month timetable for scheduling votes means that the earliest possible by‑election could be held as soon as early next year, depending on when each seat officially becomes vacant. The financial burden of multiple by‑elections will add pressure on the federal budget, particularly at a time when the government is under scrutiny for its affordability agenda—a cause Aitchison himself championed.

By‑election Logistics and Financial Implications

Why it Matters

Aitchison’s departure is more than the loss of a long‑serving MP; it reflects a broader trend of political upheaval within the Conservative caucus and highlights the challenges of retaining experienced legislators in an era of heightened turnover. The resulting six by‑elections will not only test the party’s organisational capacity but also serve as barometers of public sentiment on key issues such as housing affordability, immigration policy, and economic stability. As the party prepares to fill these gaps, the responses from both government and opposition will shape the upcoming legislative agenda and could influence the political calculus ahead of the next federal election.

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