Electoral Systems Flashcards
Legitimacy
Rightfulness: a political system is legitimate when it is based on the consent of the people. Political actions are also legitimate if they follow from agreed laws and procedures.
Mandate
An authoritative instruction; the doctrine of the mandate gives the party that wins a general election the authority to implement it manifesto commitments.
Manifesto
A document in which a political party sets out its policy programme at an election.
By-election
A one-off election that takes place in an individual constituency when a vacancy arises between scheduled elections.
Constituency
A geographical area that elects one or more representatives to a legislative assembly.
Majoritarian system
An electoral system in which the winning candidate must achieve an absolute majority of votes cast in a single-member constituency.
Single-member plurality system
An electoral system in which the candidate with the most votes in a single-member constituency wins.
District magnitude
The number of representatives elected from a particular constituency.
Mixed system
An electoral system where a proportion of representatives are elected under a majoritarian/plurality system in single-member constituencies, and the others are elected as ‘additional members’ using a proportional system in multi-member constituencies.
Proportional representation (PR)
An electoral system using multi-member constituencies in which an electoral formula is used to match the percentage of seats won by each party to the percentage of votes they won.
Safe seat
A constituency in which the incumbent party has a large majority, and which is usually retained by the same political party at election after election.
Marginal seat
A constituency where the incumbent party has a small majority and which may thus be won by a different party at the next election.
Swing
The extent of change in support for one part to support for another party from one election to another.
Turnout
The percentage of registered voters who voted at an election.
Winners’ bonus
The share of seats that the first-placed party wins in excess of its share for the vote under FPTP. The system exaggerates the support received by the most popular giving it more seats than is proportional to the number of votes it received, thus boosting its majority in parliament.