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- Conservative
- Liberal
- NDP
- Non-partisan
General elections to the Canadian province of Prince Edward Island's unicameral legislative body, the Prince Edward Island House of Assembly. Prince Edward Island became part of the Canadian Confederation in 1873. Prior to that, Prince Edward Island was a British colony; the House of Assembly dates to 1769.
The number of seats has varied over time, from a high of thirty-two between the 1960s and 1990s, to the current low of twenty-seven.
Prince Edward Island was effectively a two-party system - the Liberal party (red) and Conservative party (blue) until the 2019 election. After the first two elections (when not all MLAs declared a party allegiance), until 2015, only one MLA had been elected who has not been a member of these two parties. The Green Party won their first seat in 2015, their second in a 2017 byelection, and won a total of 8 seats in 2019, to form the first Green Official Opposition.
The Liberal party won eighteen out of twenty-nine of the elections in the 20th century.
Prior to 1996, PEI used 16 dual-member ridings; the 32 members have sat together since the 1893 abolition of the Legislative Council. The boundaries for these ridings were drawn in 1893; a single change was made in 1966 (when the riding of Charlottetown, also known as 5th Queens, was split into two parts). In 1996, a court determined that the number of electors varied too much between ridings, and was therefore unconstitutional. This resulted in a new set of (single-member) ridings being created.