The 1973 Quebec general election was held on October 29, 1973 to elect members to National Assembly of Quebec, Canada. The incumbent Quebec Liberal Party, led by Premier Robert Bourassa, won re-election, defeating the Parti Québécois, led by René Lévesque, and the Union Nationale (UN).

The Liberals won the largest majority government in the province's history, with 102 seats. In the process, they reduced the opposition to just eight seats (six PQ, two créditistes) in total. The Parti Québécois held its own, losing only one seat, and despite having fewer seats, became the official Opposition, although PQ leader René Lévesque failed to win a seat in the Assembly.

The Union Nationale, which had held power until the previous 1970 general election, was wiped off the electoral map, losing all 17 of its seats. It would be the first time since the UN's founding in 1935 that the party was without representation in the legislature. However, UN candidate Maurice Bellemare later won a seat in a 1974 by-election.

The popular vote was not as lopsided as the seat count would indicate, even though the Liberals won 54 per cent of the popular vote. The Parti Québécois, for instance, won 30% of the popular vote, a significant improvement over their previous showing of 23% in the 1970 election. However, their support was spread out across the entire province, and was not concentrated in enough areas to translate into more seats. Quebec elections have historically produced significant disparities in seat counts.

Legislative reforms (19701973) Abolition of protected ridings Upon Confederation in 1867, section 80 of the British North America Act, 1867 provided for the following ridings in the Legislative Assembly to be protected from having their boundaries altered without the consent of the majority of the members representing them:

Argenteuil Brome Compton Huntingdon Mégantic Missisquoi Ottawa Labelle was carved out in 1912 Papineau was carved out from Labelle in 1922 Ottawa was divided into Hull and Papineau in 1919 Pontiac Témiscaming was carved out in 1912 Abitibi was carved out from Témiscamingue in 1922 Richmond and Wolfe (divided into Richmond and Wolfe in 1890) Shefford Sherbrooke Stanstead

Consent by a majority of the members of the 18 districts concerned was finally secured in December 1970, and the constitutional restrictions were accordingly revoked. Work would then proceed on a comprehensive redistribution for the next ensuing election.

Redistribution of ridings A 1972 Act increased the number of MNAs from 108 to 110 through the following changes:

Abolished ridings New ridingsDrawn from parts of other ridingsAnjoufrom parts of Bourassa, Bourget and LaFontaine Charlesbourgfrom parts of Chauveau and Montmorency Laportefrom parts of Taillon and Chambly Mont-Royalfrom parts of D'Arcy-McGee, Dorion and Outremont Pointe-Clairefrom parts of the existing Jacques-Cartier and Robert-Baldwin Prévostfrom parts of Montcalm and Terrebonne Rosemontfrom parts of Gouin and Jeanne-Mance Saint-Françoisfrom parts of Compton, Richmond and Sherbrooke Taschereaufrom parts of Jean-Talon and Saint-Sauveur Viaufrom parts of Dorion, Gouin, Jeanne-Mance and OlierAbolition of ridingsDorchesterdivided between Bellechasse, Beauce-Nord and Beauce-SudMéganticdivided between Lotbinière and FrontenacOlierdivided between Viau, Jeanne-Mance and BourassaRouvilledivided between Iberville and ChamblyReorganization of ridingsCompton Frontenac WolfeFrontenac Mégantic-ComptonMerger of ridingsBrome MissisquoiBrome-MissisquoiGaspé-Nord Gaspé-SudGaspéJoliette MontcalmJoliette-MontcalmKamouraska TémiscouataKamouraska-TémiscouataL'Islet MontmagnyMontmagny-L'IsletNicolet YamaskaNicolet-YamaskaPontiac TémiscaminguePontiac-TémiscamingueDivision of ridingsAhuntsicCrémazie L'AcadieBeauceBeauce-Nord Beauce-SudBourassaBourassa SauvéFabreFabre Mille-ÎlesSaint-SauveurSaint-Sauveur VanierRenaming of ridingsBagotJohnsonLabelleLaurentides-LabelleNapierville-LaprairieLa PrairieStansteadOrford

Campaign The Liberals, Unionists and péquistes all fielded full slates, while the créditistes failed to nominate a candidate only in Saint-Laurent (because a traffic accident prevented that candidate from presenting his nomination papers before the deadline), so virtually all constituencies experienced at least four-way contests:

+ Riding contests, by number of candidates (1973) CandidatesLibPQUNRCIndM-LCommTotal31 1 1 3476 76 76 76 304529 29 29 29 16 12 1 14562 2 2 2 2 1 1 1271 1 1 1 2 1 781 1 1 1 2 1 1 8Total110 110 110 109 22 15 3 479

Results

! colspan=2 rowspan=2 | Political party ! rowspan=2 | Party leader ! colspan=4 | MNAs ! colspan=4 | Votes |- ! Candidates !1970 !1973 !± !# ! ± !% ! ± (pp)

|style="text-align:left;"|Robert Bourassa | 110 || 72 || 102 || 30 || 1,623,734 || 319,393 || 54.65% || 9.25

|style="text-align:left;"|René Lévesque | 110 || 7 || 6 || 1 || 897,809 || 235,405 || 30.22% || 7.16 1973 results compared to 1970 Ralliement créditiste total |style="text-align:left;"|Yvon Dupuis | 109 || 12 || 2 || 10 || 294,706 || 26,664 || 9.92% || 1.27

|style="text-align:left;"|Gabriel Loubier | 110 || 17 || – || 17 || 146,209 || 418,335 || 4.92% || 14.73

| || 22 || – || – || – || 6,961 || 5,567 || 0.23% || 0.21

| || 15 || – || – || – || 1,395 || 1,395 || 0.05% ||New

|style="text-align:left;"|Sam Walsh | 3 || – || – || – || 164 || 49 || 0.01% || – |- ! colspan="3" style="text-align:left;" | Total |479||108 ! " colspan="2"|110 ! " colspan="2"|2,970,978 ! " colspan="2"| 100.00% |- | colspan="7" style="text-align:left;" | Rejected ballots | 54,760 | 2,269 | colspan="2"| |- | colspan="7" style="text-align:left;" | Voter turnout | 3,025,738 | 95,739 | 80.38 | 3.85 |- | colspan="7" style="text-align:left;" | Registered electors | 3,764,611 | 286,033 | colspan="2"|

Vote and seat summaries

+ Seats and popular vote by party Party Seats Votes Change (pp)

Synopsis of results