The 2017 Conservative Party of Canada leadership election was held on May 27, 2017. Party members chose Andrew Scheer as leader, replacing Stephen Harper, who led the Conservative Party of Canada as its leader from 2004 following the merger of the Canadian Alliance and Progressive Conservative parties. Harper led the party through five federal elections: the party increased its seat count in the House of Commons in 2004, formed two minority governments in 2006, and 2008, and then a majority government in 2011. Following the defeat of the party in the 2015 federal election on October 19, Harper tendered his resignation as party leader. In a statement, Conservative Party President John Walsh said he had spoken to Harper, "and he has instructed me to reach out to the newly elected parliamentary caucus to appoint an interim Leader and to implement the leadership selection process."

Andrew James Scheer is a Canadian politician who has served as the member of Parliament (MP) for Regina—Qu'Appelle since 2004. Scheer served as the 35th speaker of the House of Commons from 2011 to 2015, and was the leader of the Conservative Party and leader of the Official Opposition from 2017 to 2020.