All leadership conventions were delegated conventions, except in 1998 when a one-member-one-vote (OMOV) process was used in which each riding was allocated 100 points which were distributed among candidates by proportional representation. For the 2003 leadership election, the party reverted to use of a delegated convention, obstensibly because of the cost of using an OMOV process though it has been argued that the party feared that use of OMOV would make an outside takeover of the party easier due to a decline in membership. In 2003, the party merged with the Canadian Alliance to form a new Conservative Party of Canada. This party adopted the OMOV process the Tories had used in 1998.
Note on tables: Green box indicates winner. Pink box indicates candidate eliminated from ballot for receiving the fewest votes. Blue box indicates candidate withdrew from balloting.
Manion lost his seat in the 1940 federal election and R.B. Hanson became interim leader. In November 1941 a national conference of the party voted against having a leadership convention and instead appointed Arthur Meighen as the party's wartime leader. Meighen was defeated in a 1942 by-election and resigned.
The 1995 leadership convention was held in Hull, Quebec on April 29, 1995 to ratify Jean Charest as leader. Charest had been named interim leader following the 1993 federal election, which reduced the Progressive Conservatives to only two seats, with Charest being the only cabinet minister to win re-election.
The 1998 leadership election was held on October 24 and November 14, 1998. The party's finances were in such a bad state that it could not afford a traditional leadership convention. The 1998 election used a point system that allocated 100 points to each riding, regardless of the number of votes cast in the riding. The candidate who won a majority of points (not necessarily a majority of votres) would win the leadership. All party members were eligible to cast a vote. The 100-point-per-riding system was again used by the Conservative Party of Canada in its 2004 leadership race.
Withdrew before 1st ballot began; Endorsed Prentice
Two other candidates had participated in the race. Quebec MP André Bachand withdrew his candidacy from the race due to financial concerns and backed Peter MacKay. Former Cabinet Minister and Quebec MP Heward Grafftey also withdrew his candidacy from the race due to health concerns.