Concept
Proportional representation
Related concepts (31)
Single-member district
A single-member district is an electoral district represented by a single officeholder. It contrasts with a multi-member district, which is represented by multiple officeholders. Single-member districts are also sometimes called single-winner voting, winner-takes-all, single-member constituencies or single-member electorates. A number of electoral systems use single-member districts, including plurality voting (first-past-the-post), two-round systems, instant-runoff voting (IRV), approval voting, range voting, Borda count, and Condorcet methods (such as the Minimax Condorcet, Schulze method, and Ranked Pairs).
Overhang seat
Overhang seats are constituency seats won in an election under the traditional mixed member proportional (MMP) system (as it originated in Germany), when a party's share of the nationwide votes would entitle it to fewer seats than the number of individual constituencies won. The electoral reform in Germany removed the overhang seats, and replaced with Zweitstimmendeckung. Under MMP, a party is entitled to a number of seats based on its share of the total vote.
Scorporo
Scorporo (ˈskɔrporo, parceling out) is a partially compensatory, mixed-member majoritarian electoral system, sometimes referred to as a negative vote transfer system (NVT) whereby a portion of members are elected in single-member districts (SMDs) and a portion are elected from a list. It may be fully defined as a parallel voting system which excludes a portion (up to 100%) of the SMD winners' votes in electing the proportional tier, to result in a more proportional outcome.
FairVote
FairVote, formerly the Center for Voting and Democracy, is a 501(c)(3) organization that advocates electoral reform in the United States. Founded in 1992 as Citizens for Proportional Representation to support the implementation of proportional representation in American elections, the organization in 1993 became the Center for Voting and Democracy and in 2004 changed its name to FairVote to reflect its support of such proposals as instant-runoff voting (IRV), for single and multi-winner elections, a national popular vote for president, a right-to-vote amendment to the Constitution, and universal voter registration.
Electoral alliance
An electoral alliance (also known as a bipartisan electoral agreement, electoral pact, electoral agreement, electoral coalition or electoral bloc) is an association of political parties or individuals that exists solely to stand in elections. Each of the parties within the alliance has its own policies but chooses temporarily to put aside differences in favour of common goals and ideology in order to pool their voters' support and get elected.
Majority bonus system
The majority bonus system (MBS) is a form of semi-proportional representation used in some European countries. Its feature is a majority bonus which gives extra seats or representation in an elected body to the party or to the joined parties with the most votes with the aim of providing government stability. It is currently used in Greece, Armenia, San Marino, French Polynesia and formerly in Italy from 2006 to 2013. In Argentina, it is used in the Chamber of Deputies of the Province of Santa Fe, Chubut, and Entre Ríos.
Highest averages method
A highest-averages method, also called a divisor method, is a class of methods for allocating seats in a parliament among agents such as political parties or federal states. A divisor method is an iterative method: at each iteration, the number of votes of each party is divided by its divisor, which is a function of the number of seats (initially 0) currently allocated to that party. The next seat is allocated to the party whose resulting ratio is largest.
Elections in Germany
Elections in Germany include elections to the Bundestag (Germany's federal parliament), the Landtags of the various states, and local elections. Several articles in several parts of the Basic Law for the Federal Republic of Germany govern elections and establish constitutional requirements such as the secret ballot, and requirement that all elections be conducted in a free and fair manner. The Basic Law also requires that the federal legislature enact detailed federal laws to govern elections; electoral law(s).
Leveling seat
Leveling seats (tillægsmandat, utjämningsmandat, utjevningsmandater, jöfnunarsæti, Ausgleichsmandat), commonly known also as adjustment seats, are an election mechanism employed for many years by all Nordic countries (except Finland) in elections for their national legislatures. In 2013, Germany also introduced national leveling seats for their national parliament, the Bundestag. The electoral reform in Germany 2023 removed the leveling seats, and replaced with Zweitstimmendeckung.
Sequential proportional approval voting
Sequential proportional approval voting (SPAV) or reweighted approval voting (RAV) is an electoral system that extends the concept of approval voting to a multiple winner election. It is a simplified version of proportional approval voting. Proposed by Danish statistician Thorvald N. Thiele in the early 1900s, it was used (with adaptations for party lists) in Sweden for a short period from 1909-1921, and was replaced by a cruder "party-list" style system as it was easier to calculate.