Electoral System
High School
Definition
The set of rules by which votes are cast and translated into seats or offices. Canada uses a first-past-the-post system, in which the candidate with the most votes in a riding wins, shaping how parties gain power.
Worked examples
In Canada's 2021 federal election, a Liberal candidate won a riding with 38% of the vote while three other candidates split the remaining 62%.
First-past-the-post means the candidate with the most votes wins, even without a majority.
A party winning 40% of the national popular vote can win a majority of seats if those votes are concentrated in key ridings.
The electoral system translates votes into seats, sometimes magnifying a party's strength regionally.
Common mistakes
- The party with the most votes nationally always forms the government. → The party with the most seats in Parliament forms the government. First-past-the-post counts seats won riding-by-riding, not total national votes.
- A candidate needs more than 50% of votes to win a riding. → A candidate only needs more votes than any other single candidate (a plurality). First-past-the-post requires a plurality, not a majority.
- All democracies use the same electoral system as Canada. → Different countries use different electoral systems, such as proportional representation. Electoral systems vary widely; many democracies do not use first-past-the-post.
Where you'll use it next
You'll apply this concept when studying comparative government, analyzing election results, debating electoral reform, and understanding how voting systems shape party strategy and representation in legislatures.
See also
Voting and ElectionsPolitical PartiesDemocracyPolitical SystemsFederalismCanadian Constitution and Charter
Reviewed by Pat Cheng, M.Ed. — StudyPug Curriculum Lead · Last updated June 6, 2026