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Efficiency Gap
The efficiency gap is a measure devised by University of Chicago law professor Nicholas Stephanopoulos and political scientist Eric McGhee in 2014. This statistic has been used to quantitatively assess the effect of gerrymandering, the assigning of voters to electoral districts in such a way as to increase the number of districts won by one political party at the expense of another. It has been called the most scrutinized method of measuring gerrymandering. The heart of the computation is to add up, over all electoral districts, the wasted votes of each party's candidates. The efficiency gap is the difference between the two parties' wasted votes, divided by the total number of votes. Wasted votes and efficiency gap are defined pp. 850–852. Stephanopoulos and McGhee argued that in a non-partisan redistricting with two roughly equally popular parties, the efficiency gap would be zero, with an equal number of wasted votes from either party. An efficiency gap above 7% or below -7% can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Chicago
The University of Chicago (UChicago, Chicago, U of C, or UChi) is a private research university in Chicago, Illinois. Its main campus is located in Chicago's Hyde Park neighborhood. The University of Chicago is consistently ranked among the best universities in the world and it is among the most selective in the United States. The university is composed of an undergraduate college and five graduate research divisions, which contain all of the university's graduate programs and interdisciplinary committees. Chicago has eight professional schools: the Law School, the Booth School of Business, the Pritzker School of Medicine, the Crown Family School of Social Work, Policy, and Practice, the Harris School of Public Policy, the Divinity School, the Graham School of Continuing Liberal and Professional Studies, and the Pritzker School of Molecular Engineering. The university has additional campuses and centers in London, Paris, Beijing, Delhi, and Hong Kong, as well as in downtown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasted Vote
In electoral systems, a wasted vote is any vote which is not for an elected candidate or, more broadly, a vote that does not help to elect a candidate. The narrower meaning includes ''lost votes'', being only those votes which are for a losing candidate or party. The broader definition of wasted votes includes ''excess votes'', namely votes for winning candidates in excess of the minimum needed to win. Wasted votes and efficiency gap are defined pp. 850–852. In plurality systems, wasted votes are the basis of the ''efficiency gap'' measure, where the shape of electoral districts (or the existence of them) can be quantified to show just how imperfect such a system is at allocating voter preferences. The efficiency gap has been called the most scrutinized method of measuring gerrymandering. Ranked voting almost always reduces wasted votes in plurality systems by offering multiple chances for a vote to count towards a winner, where exhausted ballots include only the ballots where all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wasted Vote
In electoral systems, a wasted vote is any vote which is not for an elected candidate or, more broadly, a vote that does not help to elect a candidate. The narrower meaning includes ''lost votes'', being only those votes which are for a losing candidate or party. The broader definition of wasted votes includes ''excess votes'', namely votes for winning candidates in excess of the minimum needed to win. Wasted votes and efficiency gap are defined pp. 850–852. In plurality systems, wasted votes are the basis of the ''efficiency gap'' measure, where the shape of electoral districts (or the existence of them) can be quantified to show just how imperfect such a system is at allocating voter preferences. The efficiency gap has been called the most scrutinized method of measuring gerrymandering. Ranked voting almost always reduces wasted votes in plurality systems by offering multiple chances for a vote to count towards a winner, where exhausted ballots include only the ballots where all ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unrepresented Vote
The unrepresented voters are considered the total amount of voters not represented by any party sitting in the legislature in the case of proportional representation. In contrast, the related concept of wasted votes generally applies to plurality voting, which generally has a higher percentage of wasted votes. The unrepresented voters are calculated as:v_=\sum_^nv_i where v_i is the vote share of unrepresented party i and n is the overall number of unrepresented parties. The unrepresented voters can be given as a percentage of the total amount of votes or as the absolute number of votes. The unrepresented voters increases with a higher electoral threshold, one of the ways to reduce political fragmentation. Even with no explicit electoral threshold, the natural electoral threshold applies. On occasion, unrepresented voters have resulted in a party winning an outright majority of seats without winning an outright majority of votes, the sort of outcome that a proportional voting system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proportional Representation
Proportional representation (PR) refers to a type of electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to geographical (e.g. states, regions) and political divisions (political parties) of the electorate. The essence of such systems is that all votes cast - or almost all votes cast - contribute to the result and are actually used to help elect someone—not just a plurality, or a bare majority—and that the system produces mixed, balanced representation reflecting how votes are cast. "Proportional" electoral systems mean proportional to ''vote share'' and ''not'' proportional to population size. For example, the US House of Representatives has 435 districts which are drawn so roughly equal or "proportional" numbers of people live within each district, yet members of the House are elected in first-past-the-post elections: first-past-the-post is ''not'' proportional by vote share. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerrymandering
In representative democracies, gerrymandering (, originally ) is the political manipulation of electoral district boundaries with the intent to create undue advantage for a party, group, or socioeconomic class within the constituency. The manipulation may involve "cracking" (diluting the voting power of the opposing party's supporters across many districts) or "packing" (concentrating the opposing party's voting power in one district to reduce their voting power in other districts). Gerrymandering can also be used to protect incumbents. Wayne Dawkins describes it as politicians picking their voters instead of voters picking their politicians. The term ''gerrymandering'' is named after American politician Elbridge Gerry, Vice President of the United States at the time of his death, who, as governor of Massachusetts in 1812, signed a bill that created a partisan district in the Boston area that was compared to the shape of a mythological salamander. The term has negative con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Washington Post
''The Washington Post'' (also known as the ''Post'' and, informally, ''WaPo'') is an American daily newspaper published in Washington, D.C. It is the most widely circulated newspaper within the Washington metropolitan area and has a large national audience. Daily broadsheet editions are printed for D.C., Maryland, and Virginia. The ''Post'' was founded in 1877. In its early years, it went through several owners and struggled both financially and editorially. Financier Eugene Meyer purchased it out of bankruptcy in 1933 and revived its health and reputation, work continued by his successors Katharine and Phil Graham (Meyer's daughter and son-in-law), who bought out several rival publications. The ''Post'' 1971 printing of the Pentagon Papers helped spur opposition to the Vietnam War. Subsequently, in the best-known episode in the newspaper's history, reporters Bob Woodward and Carl Bernstein led the American press's investigation into what became known as the Watergate scandal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compactness Measure Of A Shape
The compactness measure of a shape is a numerical quantity representing the degree to which a shape is compact. The meaning of "compact" here is not related to the topological notion of compact space. Properties Various compactness measures are used. However, these measures have the following in common: *They are applicable to all geometric shapes. *They are independent of scale and orientation. *They are dimensionless numbers. *They are not overly dependent on one or two extreme points in the shape. *They agree with intuitive notions of what makes a shape compact. Examples A common compactness measure is the isoperimetric quotient, the ratio of the area of the shape to the area of a circle (the most compact shape) having the same perimeter. In the plane, this is equivalent to the Polsby–Popper test. Alternatively, the shape's area could be compared to that of its bounding circle, its convex hull, or its minimum bounding box. Similarly, a comparison can be made between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electoral Threshold
The electoral threshold, or election threshold, is the minimum share of the primary vote that a candidate or political party requires to achieve before they become entitled to representation or additional seats in a legislature. This limit can operate in various ways, e.g. in party-list proportional representation systems where an electoral threshold requires that a party must receive a specified minimum percentage of votes (e.g. 5%), either nationally or in a particular electoral district, to obtain seats in the legislature. In Single transferable voting the election threshold is called the quota and not only the first choice but also the next-indicated choices are used to determine whether or not a party passes the electoral threshold (and it is possible to be elected under STV even if a candidate does not pass the election threshold). In MMP systems the election threshold determines which parties are eligible for the top-up seats. The effect of an electoral threshold is to d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerrymandering
In representative democracies, gerrymandering (, originally ) is the political manipulation of electoral district boundaries with the intent to create undue advantage for a party, group, or socioeconomic class within the constituency. The manipulation may involve "cracking" (diluting the voting power of the opposing party's supporters across many districts) or "packing" (concentrating the opposing party's voting power in one district to reduce their voting power in other districts). Gerrymandering can also be used to protect incumbents. Wayne Dawkins describes it as politicians picking their voters instead of voters picking their politicians. The term ''gerrymandering'' is named after American politician Elbridge Gerry, Vice President of the United States at the time of his death, who, as governor of Massachusetts in 1812, signed a bill that created a partisan district in the Boston area that was compared to the shape of a mythological salamander. The term has negative con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proportional Representation
Proportional representation (PR) refers to a type of electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to geographical (e.g. states, regions) and political divisions (political parties) of the electorate. The essence of such systems is that all votes cast - or almost all votes cast - contribute to the result and are actually used to help elect someone—not just a plurality, or a bare majority—and that the system produces mixed, balanced representation reflecting how votes are cast. "Proportional" electoral systems mean proportional to ''vote share'' and ''not'' proportional to population size. For example, the US House of Representatives has 435 districts which are drawn so roughly equal or "proportional" numbers of people live within each district, yet members of the House are elected in first-past-the-post elections: first-past-the-post is ''not'' proportional by vote share. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unrepresented Vote
The unrepresented voters are considered the total amount of voters not represented by any party sitting in the legislature in the case of proportional representation. In contrast, the related concept of wasted votes generally applies to plurality voting, which generally has a higher percentage of wasted votes. The unrepresented voters are calculated as:v_=\sum_^nv_i where v_i is the vote share of unrepresented party i and n is the overall number of unrepresented parties. The unrepresented voters can be given as a percentage of the total amount of votes or as the absolute number of votes. The unrepresented voters increases with a higher electoral threshold, one of the ways to reduce political fragmentation. Even with no explicit electoral threshold, the natural electoral threshold applies. On occasion, unrepresented voters have resulted in a party winning an outright majority of seats without winning an outright majority of votes, the sort of outcome that a proportional voting system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
