Voting was only in-person and for delegates. The CPC have over 600,000 members nationally. They had under 3,000 eligible to vote on leadership, so <0.5% of members choose the leader.
Tells you a lot about the party.
Compare that to the other party also about to select a new leader, the NDP. In their process, 100% of members get a vote on their leader, no matter where they are in the country. People just had to join before January 28, and fees I think are as low as a dollar for people who couldn't afford it.
Night and day in terms of democratic process.