By-elections to the 4th Canadian Parliament were held to elect members of the House of Commons of Canada between the 1878 federal election and the 1882 federal election. The Conservative Party of Canada led a majority government for the 4th Canadian Parliament.

The list includes Ministerial by-elections which occurred due to the requirement at the time that Members of Parliament recontest their seats upon being appointed to Cabinet. These by-elections were almost always uncontested. This requirement was abolished in 1931. By-election Date Incumbent Party Winner Party Cause RetainedNew WestminsterMarch 9, 1882Thomas Robert McInnes    Independent Joshua Homer    Liberal-Conservative Called to the Senate.NoSimcoe SouthFebruary 16, 1882William Carruthers Little    Liberal-Conservative Angus McIsaac    Conservative DeathYesNorthumberland WestDecember 19, 1881James Cockburn    ConservativeGeorge Guillet    ConservativeAppointed Chairman of the Commission to collect, examine and classify the Statutes passed by the Parliament of the Dominion of Canada, since ConfederationYesArgenteuilAugust 17, 1881John Joseph Caldwell Abbott    Liberal-ConservativeJohn Joseph Caldwell Abbott    Liberal-Conservative Election declared void.YesPictorJune 18, 1881James McDonald    ConservativeJohn McDougald    Liberal-ConservativeAppointed Chief Justice of the Supreme Court of Nova Scotia.YesColchesterJune 18, 1881Thomas McKay    Liberal-Conservative Archibald McLelan    ConservativeCalled to the Senate.YesColchesterMarch 31, 1881Joshua Spencer Thompson    Liberal-Conservative James Reid    Liberal-ConservativeDeathYesNorthumberland EastMarch 25, 1881Joseph Keeler    Liberal-Conservative Darius Crouter    Independent LiberalDeathNoBellechasseMarch 19, 1881Achille Larue    Liberal Guillaume Amyot    ConservativeElection declared void.NoCharlevoixMarch 19, 1881Joseph-Stanislas Perrault    Conservative Simon-Xavier Cimon    ConservativeElection declared void.YesCarletonFebruary 16, 1881George Heber Connell    IndependentDavid Irvine    Liberal DeathNoJolietteDecember 9, 1880Louis François Georges Baby    ConservativeLewis Arthur McConville    ConservativeAppointed a judge of the Superior Court of QuebecYesOxford NorthDecember 9, 1880Thomas Oliver    Liberal James Sutherland    Liberal DeathYesMontmorencyDecember 9, 1880Auguste-Réal Angers    ConservativePierre-Vincent Valin    ConservativeAppointed a judge of the Superior Court of Quebec.YesQuebec CountyNovember 20, 1880Adolphe-Philippe Caron    ConservativeAdolphe-Philippe Caron    ConservativeRecontested upon appointment as Minister of Militia and Defence.YesBagotNovember 20, 1880Joseph-Alfred Mousseau    ConservativeJoseph-Alfred Mousseau    ConservativeRecontested upon appointment as President of the Privy Council.YesBromeOctober 18, 1880Edmund Leavens Chandler    Liberal David Ames Manson    Liberal-ConservativeDeathNoSelkirkSeptember 10, 1880Donald Smith    Independent Conservative Thomas Scott    ConservativeElection declared void.NoOntario NorthAugust 28, 1880George Wheler    Liberal George Wheler    Liberal Election declared void.YesWest TorontoAugust 28, 1880John Beverly Robinson    Conservative James Beaty, Jr.    ConservativeAppointed Lieutenant-Governor of Ontario.YesChâteauguayApril 17, 1880Luther Hamilton Holton    Liberal Edward Holton    Liberal DeathYesMontmorencyFebruary 14, 1880Pierre-Vincent Valin    ConservativeAuguste-Réal Angers    ConservativeElection declared void.YesArgenteuilFebruary 12, 1880Thomas Christie    Liberal John Joseph Caldwell Abbott    Liberal-Conservative Election declared void.NoCornwallJanuary 27, 1880Darby Bergin    Liberal-ConservativeDarby Bergin    Liberal-Conservative Election declared void.YesLanark NorthJanuary 22, 1880Daniel Galbraith    Liberal Donald Greenfield MacDonell    Liberal DeathYesProvencherDecember 30, 1879Joseph Dubuc    ConservativeJoseph Royal    ConservativeAppointed a Judge of the Court of Queen's Bench for Manitoba.YesDurham WestNovember 17, 1879Harvey William Burk    Liberal Edward Blake    Liberal Resignation to provide a seat for Blake. YesCape BretonOctober 23, 1879Hugh McLeod    Liberal-ConservativeWilliam Mackenzie McLeod    Liberal-ConservativeDeathYesYaleSeptember 29, 1879Edgar Dewdney    ConservativeFrancis Jones Barnard    ConservativeAppointed Indian Commissioner of Manitoba and the North West Territories.YesBonaventureAugust 26, 1879Théodore Robitaille    ConservativePierre-Clovis Beauchesne    ConservativeAppointed Lieutenant Governor of Quebec.YesYamaskaJuly 7, 1879Charles-Ignace Gill    ConservativeFabien Vanasse dit Vertefeuille    ConservativeAppointed a judge to the Quebec Superior Court.YesNiagaraMarch 20, 1879Patrick Hughes    Liberal Josiah Burr Plumb    ConservativeElection declared void. NoHastings EastFebruary 25, 1879John White    Conservative John White    ConservativeElection declared void. YesCharlevoixFebruary 13, 1879Pierre-Alexis Tremblay    Liberal Joseph-Stanislas Perrault    ConservativeDeathNoBeauharnoisJanuary 9, 1879Michael Cayley    ConservativeJoseph Gédéon H. Bergeron    ConservativeDeathYesMarquetteNovember 30, 1878John A. Macdonald    Liberal-ConservativeJoseph O'Connell Ryan    Liberal MacDonald was elected in several seats simultaneously, resigned to run in Ministerial by-election in Victoria.NoThree RiversNovember 21, 1878William McDougall    ConservativeHector-Louis Langevin    Conservative Resignation to provide a seat for Langevin.YesJolietteNovember 14, 1878Louis François Georges Baby    ConservativeLouis François Georges Baby    ConservativeRecontested upon appointment as Minister of Inland Revenue.YesQueens CountyNovember 9, 1878James Colledge Pope    ConservativeJames Colledge Pope    ConservativeRecontested upon appointment as Minister of Marine and Fisheries.YesHastings NorthNovember 6, 1878Mackenzie Bowell    ConservativeMackenzie Bowell    ConservativeRecontested upon appointment as Minister of Customs.YesTerrebonneNovember 6, 1878Louis-Rodrigue Masson    ConservativeLouis-Rodrigue Masson    ConservativeRecontested upon appointment as Minister of Militia and Defence.YesCity of St. JohnNovember 4, 1878Samuel Leonard Tilley    Liberal-ConservativeSamuel Leonard Tilley    Liberal-ConservativeRecontested upon appointment as Minister of Finance.YesPictouNovember 4, 1878James McDonald    ConservativeJames McDonald    ConservativeRecontested upon appointment as Minister of Justice and Attorney General.YesRussellNovember 4, 1878John O'Connor    ConservativeJohn O'Connor    ConservativeRecontested upon appointment as President of the Privy Council.YesComptonNovember 4, 1878John Henry Pope    Liberal-ConservativeJohn Henry Pope    Liberal-ConservativeRecontested upon appointment as Minister of Agriculture.YesCumberlandNovember 4, 1878Charles Tupper    ConservativeCharles Tupper    ConservativeRecontested upon appointment as Minister of Public Works.YesHuron CentreNovember 2, 1878Horace Horton    Liberal Richard John Cartwright    Liberal Appointment in the office of the Auditor-General of Canada.Yes

See also List of federal by-elections in Canada

Sources Parliament of Canada–Elected in By-Elections