1958 Liberal Party of Canada leadership election
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| Date | January 16, 1958 | 
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| Convention | Ottawa Coliseum, Lansdowne Park, Ottawa, Ontario  | 
| Resigning leader | Louis St. Laurent | 
| Won by | Lester Pearson | 
| Ballots | 1 | 
| Candidates | 3 | 
In 1958, the Liberal Party of Canada held a leadership election to replace leader Louis St. Laurent, who had resigned as Prime Minister after the party's defeat in the 1957 election. On the first ballot, former External Affairs minister Lester Pearson defeated former cabinet minister Paul Martin and Mayor of Portage la Prairie, Harold Lloyd Henderson.