Ontario Conservative MP Larry Brock has announced he will resign from the House of Commons next month, becoming the seventh MP to leave the federal Conservative caucus since the 2025 election.
Brock, who represents Brantford—Brant South—Six Nations, said his resignation will take effect on September 18. He is leaving federal politics after accepting an opportunity to return to the Brantford Crown Attorney’s office.
Before entering politics, Brock worked as an assistant Crown attorney. He was first elected to Parliament in 2021 and won re-election in 2025.
In a letter announcing his departure, Brock said he had accepted an opportunity to return “directly to the frontlines of justice.”
Conservative Leader Pierre Poilievre thanked Brock for his service and wished him and his family success following his departure from Parliament.
Brock’s resignation adds to a series of departures that have reduced the Conservative caucus since the party finished second in the 2025 federal election.
Four Conservative MPs — Chris d’Entremont, Michael Ma, Matt Jeneroux and Marilyn Gladu — have crossed the floor to join the governing Liberals.
Former Quebec Conservative MP Richard Martel left the House after Prime Minister Mark Carney appointed him to the Senate in July. Meanwhile, Saskatchewan Conservative MP Cathay Wagantall is scheduled to resign as the representative for Yorkton—Melville on August 31.
With Brock’s departure scheduled for September, the Conservatives will have lost seven members of their post-election caucus through floor crossings, a Senate appointment and resignations.
