Stephen Harper, the only leader the Conservative Party of Canada has ever known, is stepping down. It just isn't clear when. Conservative Party president John Walsh made the announcement in a media release Monday night, shortly after Justin Trudeau's Liberals captured a stunning majority government. "I have spoken to Prime Minister Stephen Harper and he has instructed me to reach out to the newly elected parliamentary caucus to appoint an Interim Leader and to the National Council to implement the leadership selection process pursuant to the Conservative Party of Canada constitution," Walsh said in the release.