The chart on the upper right shows the information graphically, with the most recent elections towards the right. It shows that the Liberal party (red) is the only party to have won seats at every election; the disappearance of the Conservative party (blue) after 1935; the rise and fall of its replacement, the Union Nationale (green); and arrival of the separatist Parti Québécois (cyan) in the 1970s. The Liberal party have been the most successful in the province, winning twenty-one out of thirty-seven elections.
The table below shows the total number of seats won by the major political parties at each election. It also shows the percentage of the vote obtained by the major political parties at each election. The winning party's totals are shown in bold. There has been five elections (1998, 1966, 1944, 1892 and 1886) in which the winning party did not have the largest share of the vote. Full details on any election are linked via the year of the election at the start of the row.
A includes all Independent Conservative candidates elected from 1875 to 1892.
B results include the by-election held on 20 May 2003 in the Champlain electoral district to break a tie in the original general election.
C results include the by-election held on 14 December 1998 in the Masson electoral district due to the death of PQ candidate Yves Blais on 22 November 1998.
D results include the by-election held on 24 October 1994 in the Saint-Jean electoral district to break a tie in the original general election.
E includes Independent Liberal candidate; the 27 May 1912 election of Gustave Lemieux by acclamation in Gaspé; and the 15 July 1912 election of Joseph-Édouard Caron in the Îles-de-la-Madeleine.
F includes the Independent Liberal candidate elected.
G includes the Conservative candidate elected in the by-election held in Kamouraska on 11 February 1869.
H Power went back and forth a few times after the 1878 election. For most of that legislature, the Liberals controlled a minority parliament with the support of some Conservative members.
I The ADQ (Action démocratique du Québec) contested from 1994–2008. The CAQ (Coalition avenir Québec) was founded in 2011, merged with the ADQ (absorbing all of its sitting MNAs), and contested its first election in 2012.