By-elections
| By-election | Year | Incumbent | Party | Winner | Party | Cause | Retained | ||
|---|---|---|---|---|---|---|---|---|---|
| Prince | 1940 | Alfred Edgar MacLean | Liberal | James Layton Ralston | Liberal | Death | Yes | ||
| Saskatoon City | 1939 | Alexander MacGillivray Young | Liberal | Walter George Brown | United Reform Movement | Death | No | ||
| St. James | 1939 | Fernand Rinfret | Liberal | Eugène Durocher | Liberal | Death | Yes | ||
| Jacques Cartier | 1939 | Vital Mallette | Liberal | Elphège Marier | Liberal | Death | Yes | ||
| Kent | 1939 | James Rutherford | Liberal | Arthur Lisle Thompson | Liberal | Death | Yes | ||
| Calgary West | 1939 | R. B. Bennett | Conservative | Douglas Cunnington | Conservative | Resignation | Yes | ||
| Brandon | 1938 | David Wilson Beaubier | Conservative | James Ewen Matthews | Liberal | Death | No | ||
| London | 1938 | Frederick Cronyn Betts | Conservative | Robert James Manion | Conservative | Death | Yes | ||
| Waterloo South | 1938 | Alexander Edwards | Conservative | Karl Homuth | Conservative | Death | Yes | ||
| Cartier | 1938 | Samuel William Jacobs | Liberal | Peter Bercovitch | Liberal | Death | Yes | ||
| Edmonton East | 1938 | William Samuel Hall | Social Credit | Orvis A. Kennedy | Social Credit | Death | Yes | ||
| Argenteuil | 1938 | George H. Perley | Conservative | Georges Héon | Independent Conservative | Death | No | ||
| St. John—Albert | 1938 | William Ryan | Liberal | Allan McAvity | Liberal | Death | Yes | ||
| St. Henry | 1938 | Paul Mercier | Liberal | Joseph Arsène Bonnier | Liberal | Appointed a Circuit Court Judge of Montreal | Yes | ||
| Lotbinière | 1937 | Joseph-Achille Verville | Liberal | Joseph-Napoléon Francoeur | Liberal | Death | Yes | ||
| Victoria | 1937 | Simon Fraser Tolmie | Conservative | Robert Mayhew | Liberal | Death | No | ||
| Dufferin—Simcoe | 1937 | William Earl Rowe | Conservative | William Earl Rowe | Conservative | Resignation | Yes | ||
| Frontenac—Addington | 1937 | Colin Campbell | Liberal | Angus Neil McCallum | Liberal | Resignation | Yes | ||
| Cape Breton North and Victoria | 1937 | Daniel Alexander Cameron | Liberal | Matthew Maclean | Liberal | Death | Yes | ||
| Renfrew North | 1937 | Matthew McKay | Liberal | Ralph Warren | Liberal | Death | Yes | ||
| Hamilton West | 1937 | Herbert Earl Wilton | Conservative | John Allmond Marsh | Conservative | Death | Yes | ||
| Bonaventure | 1937 | Charles Marcil | Liberal | Pierre-Emile Cote | Liberal | Death | Yes | ||
| Ottawa East | 1936 | Edgar-Rodolphe-Eugène Chevrier | Liberal | Joseph Albert Pinard | Liberal | Appointed a judge of the High Court of Justice of Ontario | Yes | ||
| Gloucester | 1936 | Peter Veniot | Liberal | Clarence Joseph Veniot | Liberal | Death | Yes | ||
| Wright | 1936 | Fizalam-William Perras | Liberal | Rodolphe Leduc | Liberal | Death | Yes | ||
| Victoria | 1936 | D'Arcy Plunkett | Conservative | Simon Tolmie | Conservative | Death | Yes | ||
| Antigonish—Guysborough | 1936 | William Duff | Liberal | James Ralph Kirk | Liberal | Called to the Senate | Yes | ||
| Portneuf | 1936 | Lucien Cannon | Liberal | Pierre Gauthier | Liberal | Appointed a Superior Court Judge of Quebec | Yes | ||
| Assiniboia | 1936 | Robert McKenzie | Liberal | James Garfield Gardiner | Liberal | Resignation to provide a seat for Gardiner | Yes | ||
| Queen's | 1935 | J. James Larabee | Liberal | Charles Avery Dunning | Liberal | Appointed a Fisheries Protection Officer | Yes | ||
Read more about this topic: 18th Canadian Parliament