Conservative MP Scott Aitchison expected to step down in coming months: sources

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MP and former Conservative leadership candidate Scott Aitchison is expected to resign his seat later this fall, sources tell CBC News.

Ontario MP and former mayor made bid for Conservative leadership in 2022

CBC News

· Posted: Sep 29, 2026 5:06 PM EDT | Last Updated: 1 minute ago

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A man in a suit walks down a path followed by others.

MP and former Conservative leadership candidate Scott Aitchison is expected to resign his seat later this fall, two sources tell CBC News.

A senior Conservative source said Conservative Leader Pierre Poilievre was told last week that Aitchison plans to leave at the end of the fall sitting.

The MP's departure was going to be announced next week, the source said. CTV News first confirmed the news of his departure.

Aitchison joins a list of Conservative MPs looking to exit electoral politics in recent months.

Prime Minister Mark Carney appointed former Conservative MP Richard Martel to the Senate early in the summer. Martel was sworn into the Red Chamber earlier this week.

Former MPs Cathay Wagantall and Larry Brock both stepped down in the past month.

Aitchison has been the MP for Ontario's Parry Sound-Muskoka riding since the 2019 election.

The former Muskoka mayor launched a leadership bid in the 2022 Conservative campaign that saw Poilievre chosen as the party's chief. Aitchison finished fifth.

Housing was a key feature of Aitchison's leadership campaign and Poilievre named the MP as his housing critic.

Aitchison's office did not immediately return a request for comment.

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