By-election | Date | Incumbent | Party | Winner | Party | Cause | Retained |
Haldimand | September 8, 1886 | David Thompson | | Liberal | Charles Wesley Colter | | Liberal | Death | Yes |
Chambly | July 30, 1886 | Pierre Basile Benoit | | Conservative | Raymond Préfontaine | | Liberal | Appointed Superintendent of the Chambly Canal. | No |
King's | December 31, 1885 | George Eulas Foster | | Conservative | George Eulas Foster | | Conservative | Recontested upon appointment as Minister of Marine and Fisheries. | Yes |
City of St. John | November 24, 1885 | Samuel Leonard Tilley | | Liberal-Conservative | Frederick Eustace Barker | | Conservative | Appointed Lieutenant-Governor of New Brunswick. | Yes |
City and County of St. John | October 20, 1885 | Isaac Burpee | | Liberal | Charles Arthur Everett | | Conservative | Death | No |
Antigonish | October 16, 1885 | Angus McIsaac | | Liberal | John Sparrow David Thompson | | Liberal-Conservative | Appointed County Court Judge for District No. 6. | No |
Cardwell | August 27, 1885 | Thomas White | | Conservative | Thomas White | | Conservative | Recontested upon appointment as Minister of the Interior. | Yes |
Durham East | August 24, 1885 | Arthur Trefusis Heneage Williams | | Conservative | Henry Alfred Ward | | Conservative | Death | Yes |
Grenville South | July 4, 1885 | William Thomas Benson | | Conservative | Walter Shanly | | Conservative | Death | Yes |
Lévis | April 14, 1885 | Isidore-Noël Belleau | | Conservative | Pierre Malcom Guay | | Liberal | Unseated on a judgement of the Supreme Court. | Yes |
Northumberland West | April 7, 1885 | George Guillet | | Conservative | George Guillet | | Conservative | Election declared void | Yes |
Soulanges | February 5, 1885 | James William Bain | | Conservative | James William Bain | | Conservative | Election declared void. | Yes |
Lennox | January 28, 1885 | David Wright Allison | | Liberal | Matthew William Pruyn | | Conservative | Election declared void. | No |
Maskinongé | December 22, 1884 | Frédéric Houde | | Nationalist Conservative | Alexis Lesieur Desaulniers | | Conservative | Death. | No |
Beauce | October 31, 1884 | Joseph Bolduc | | Nationalist Conservative | Thomas Linière Taschereau | | Conservative | Called to the Senate. | Yes |
Ontario West | August 22, 1884 | George Wheler | | Liberal | James David Edgar | | Liberal | Resignation | Yes |
Queen's County | August 19, 1884 | Frederick de Sainte-Croix Brecken | | Conservative | John Theophilus Jenkins | | Liberal-Conservative | Appointed Postmaster of Charlottetown. | Yes |
Cape Breton | July 3, 1884 | William McDonald | | Conservative | Hector Francis McDougall | | Liberal-Conservative | Called to the Senate. | Yes |
York | June 29, 1884 | John Pickard | | Independent Liberal | Thomas Temple | | Conservative | Death | No |
Cumberland | June 26, 1884 | Charles Tupper | | Conservative | Charles James Townshend | | Liberal-Conservative | Appointed High Commissioner for Canada in the United Kingdom. | Yes |
Mégantic | June 10, 1884 | Louis-Israël Côté dit Fréchette | | Conservative | François Langelier | | Liberal | Election declared void. | No |
Nicolet | April 16, 1884 | François-Xavier-Ovide Méthot | | Independent Conservative | Athanase Gaudet | | Nationalist Conservative | Appointed to the Legislative Council of Quebec. | No |
Bothwell | February 25, 1884 | John Joseph Hawkins | | Liberal-Conservative | David Mills | | Liberal | Election declared void. | No |
Kent | January 29, 1884 | Henry Smyth | | Conservative | Henry Smyth | | Conservative | Election declared void. | Yes |
Soulanges | December 27, 1883 | Georges-Raoul-Léotale-Guichart-Humbert Saveuse de Beaujeu | | Conservative | James William Bain | | Conservative | Election declared void. | Yes |
Middlesex West | December 14, 1883 | George William Ross | | Liberal | Donald Mackenzie Cameron | | Liberal | Election declared void. | Yes |
Huron South | December 10, 1883 | John McMillan | | Liberal | Richard John Cartwright | | Liberal | Resignation to provide a seat for Cartwright. | Yes |
Lennox | November 26, 1883 | John A. Macdonald | | Liberal-Conservative | David Wright Allison | | Liberal | Election voided. Macdonald was concurrently elected in Carleton and chose to sit for that riding. | No |
Lévis | October 25, 1883 | Joseph-Godéric Blanchet | | Liberal-Conservative | Isidore-Noël Belleau | | Conservative | Appointed Collector of Customs for the Port of Quebec. | Yes |
Lunenburg | October 10, 1883 | Thomas Twining Keefler | | Liberal | Charles Edwin Kaulbach | | Conservative | Election declared void. | No |
Kent | September 22, 1883 | Gilbert Anselme Girouard | | Conservative | Pierre-Amand Landry | | Conservative | Appointed customs collector for Richibucto. | Yes |
Halifax | July 24, 1883 | Matthew Henry Richey | | Liberal-Conservative | John Fitzwilliam Stairs | | Conservative | Appointed Lieutenant Governor of Nova Scotia. | Yes |
Albert | July 10, 1883 | John Wallace | | Liberal | John Wallace | | Liberal-Conservative | Election declared void. | No |
King's County | April 26, 1883 | James Edwin Robertson | | Liberal | Augustine Colin Macdonald | | Liberal-Conservative | Robertson disqualified as he was a member of the Prince Edward Island Legislative Assembly at the time of the election. The seat was adjudicated to MacDonald. | No |
Queen's County | February 27, 1883 | John Theophilus Jenkins | | Liberal-Conservative | Frederick de Sainte-Croix Brecken | | Conservative | Jenkins' election being declared void, the seat was adjudicated to Mr. Brecken. | Yes |
Joliette | December 7, 1882 | Édouard Guilbault | | Conservative | Édouard Guilbault | | Independent Conservative | Election declared void. | No |
King's | November 7, 1882 | George Eulas Foster | | Conservative | George Eulas Foster | | Conservative | Election declared void. | Yes |
Soulanges | October 27, 1882 | Jacques Philippe Lantier | | Conservative | Georges-Raoul-Léotale-Guichart-Humbert Saveuse de Beaujeu | | Conservative | Death | Yes |
Bagot | September 2, 1882 | Joseph-Alfred Mousseau | | Conservative | Flavien Dupont | | Conservative | Resignation upon appointment as Premier of Quebec. | Yes |
Terrebonne | August 16, 1882 | Guillaume-Alphonse Nantel | | Conservative | Joseph-Adolphe Chapleau | | Conservative | Resignation to provide a seat for Chapleau. | Yes |