Knowledge (XXG)

Single-member district

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districts the entire district is represented by a single politician, even if a sizeable minority (or even a majority, in the case of plurality voting) of the electorate votes for candidates from other parties. This enables political parties to rig elections in their favor by drawing districts in such a way that more districts are won by their party than their proportion of the overall vote would dictate (in the
1017:, ratified in 1789, states: "The House of Representatives shall be composed of Members chosen every second Year by the People of the several States...Representatives...shall be apportioned among the several States which may be included within this Union, according to their respective Numbers." In other words, the Constitution specifies that each state will be apportioned a number of representatives in the 920: 1045:), under the justification that they served as bulwarks against southern Democrats diluting the electoral power of African Americans by using strategically drawn at-large multi-member districts. For instance, Southern Democrats could create a single statewide multi-member district elected by plurality vote, all but guaranteeing the white majority would elect only Democrats. 1125:
A safe seat is one in which a plurality or majority of voters, depending on the electoral system, support a particular candidate or party so strongly that the candidate's election is practically guaranteed in advance of the vote. This means votes for other candidates effectively make no difference to
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On the other hand, today most voters tend to vote for a candidate because they are endorsed by a particular political party or because they are in favor of who would become or remain the leader of the government, more than their feelings for or against the actual candidate standing. Sometimes voters
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It has been argued by proponents of single-member constituencies that it encourages a stronger connection between the representative and constituents and increases accountability and is a check on incompetence and corruption. In countries that have multi-member constituencies, it is argued that the
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Supporters view this effect as beneficial, claiming that two-party systems are more stable, and that the minority opposition does not have undue power to break a coalition. First-past-the-post minimizes the influence of third parties and thus arguably keeps out forms of opposition outside of the
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Single-member districts enable gerrymandering, the practice of manipulating district boundaries to favor one political party. Whereas proportional multi-member districts ensure that political parties are represented roughly in proportion to the share of the vote they receive, in single-member
1130:, by both supporters of the dominant candidate (who can confidently abstain from voting because their preferred candidate's victory is nearly assured) as well as supporters of other candidates (who know their preferred candidate is essentially guaranteed to lose). 1107:
dominant rival party. Critics of two-party systems believe that two-party systems offer less choice to voters, create an exaggerated emphasis on issues that dominate more marginal seats, and does not completely remove the possibility of a balanced chamber (or
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By 1842, single-member House districts had become the norm, with twenty-two states using single-member districts and only six using at-large multi-member districts. On 14 December 1967, single-member House districts were mandated by law pursuant to the
1431: 1001:, members of the lower house of parliament are elected from single-member districts, while members of the upper house are elected from multi-member districts. In some other countries, such as 1161:
Contrary to conventional wisdom, a 2023 study found that single-member district systems do not have more geographically representative parliaments than systems with multi-member districts.
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constituency link is lost. For example, in Israel the whole country is a single constituency and representatives are selected by party-lists.
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those representatives should be apportioned. In the early years of the United States, a form of multi-member districts called
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government in 1989 but, because of dissatisfaction with its leadership, the premier and leader of the governing party,
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multi-member districts (which had not yet been invented), plural districts were elected at-large in plurality votes.
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are in favor of a political party but do not like specific candidates. For example, voters in Canada re-elected the
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Comparison of electoral systems § Compliance of selected single-winner methods
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won 45% of the popular vote but 64% of the seats, due in part to gerrymandering).
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system is mathematically over-represented in the legislature. For example, in the
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the result. This results in feelings of disenfranchisement, as well as increased
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It has been argued that single-member districts tend to promote
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proportional to its population. It does not, however, specify
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Electoral district with one representative in a legislature
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represented by a single officeholder. It contrasts with a
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won 51.2% of the popular vote but 56.7% of the seats.
1226:"The History of Single Member Districts for Congress" 1165:
Comparison of single-member district election methods
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2014 United States House of Representatives elections
990:, which is represented by multiple officeholders. 1432:"Electoral Systems and Geographic Representation" 1411:"What Is Gerrymandering? And How Does it Work?" 955: 8: 1207:National Archives and Records Administration 1430:Carella, Leonardo; Eggers, Andrew (2023). 1369:"The Biggest Problem in American Politics" 1219: 1217: 962: 948: 38: 1091:, which shows how the winning party in a 1304:"The Case for a Better Election System" 1193: 1029:were the norm. In contrast with modern 54: 1147:2018 Wisconsin State Assembly election 1255: 1253: 1238:from the original on 19 December 2020 1083:(with some regional parties). Called 7: 1436:British Journal of Political Science 1348:from the original on 16 October 2020 1316:from the original on 28 October 2020 1260:Editorial Board (10 November 2018). 1367:Salam, Reihan (11 September 2014). 1302:Amy, Douglas J. (1 January 1997). 1281:Yglesias, Matthew (20 July 2015). 1039:Uniform Congressional District Act 25: 1388:Bump, Philip (4 December 2018). 931: 918: 906: 854:McKelvey–Schofield chaos theorem 500:Semi-proportional representation 132:First preference plurality (FPP) 1409:Wines, Michael (27 June 2019). 1262:"A Congress for Every American" 892:Harsanyi's utilitarian theorem 849:Moulin's impossibility theorem 814:Conflicting majorities paradox 1: 718:Frustrated majorities paradox 1202:"United States Constitution" 1009:History in the United States 887:Condorcet dominance theorems 827:Social and collective choice 993:In some countries, such as 553:By mechanism of combination 324:Proportional representation 18:Single-winner voting system 1492: 1168: 1137: 1118: 1015:United States Constitution 751:Multiple districts paradox 482:Fractional approval voting 470:Interactive representation 29: 1448:10.1017/S0007123423000121 1336:"Single Member Districts" 1157:Geographic representation 698:Paradoxes and pathologies 547:Mixed-member proportional 542:Mixed-member majoritarian 537:By results of combination 428:Approval-based committees 1019:House of Representatives 877:Condorcet's jury theorem 678:Double simultaneous vote 653:Rural–urban proportional 648:Dual-member proportional 610: 599: 566:Parallel (superposition) 458:Fractional social choice 445:Expanding approvals rule 274: 259: 244: 175: 164: 140: 804:Tyranny of the majority 581:Fusion (majority bonus) 398:Quota-remainder methods 1075:Fewer minority parties 976:single-member district 938:Mathematics portal 844:Majority impossibility 833:Impossibility theorems 629:Negative vote transfer 450:Method of equal shares 71: 1169:Further information: 988:multi-member district 741:Best-is-worst paradox 730:Pathological response 465:Direct representation 118:Single-winner methods 70: 925:Economics portal 872:Median voter theorem 91:Comparative politics 1395:The Washington Post 1149:, for example, the 1093:first-past-the-post 913:Politics portal 624:Vote linkage system 595:Seat linkage system 182:Ranked-choice (RCV) 1416:The New York Times 1267:The New York Times 1210:. 4 November 2015. 984:electoral district 809:Discursive dilemma 768:Lesser evil voting 643:Supermixed systems 346:Largest remainders 204:Round-robin voting 72: 1081:two-party systems 1071:, lost his seat. 1054:Constituency link 972: 971: 859:Gibbard's theorem 799:Dominance paradox 736:Perverse response 440:Phragmen's method 306:Majority judgment 234:Positional voting 192:Condorcet methods 60:electoral systems 16:(Redirected from 1483: 1460: 1459: 1427: 1421: 1420: 1406: 1400: 1399: 1385: 1379: 1378: 1364: 1358: 1357: 1355: 1353: 1332: 1326: 1325: 1323: 1321: 1299: 1293: 1292: 1278: 1272: 1271: 1257: 1248: 1247: 1245: 1243: 1221: 1212: 1211: 1198: 1151:Republican Party 1128:nonparticipation 1101:Republican Party 1027:plural districts 964: 957: 950: 936: 935: 923: 922: 911: 910: 866:Positive results 761:Strategic voting 658:Majority jackpot 615: 604: 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Index

Single-winner voting system
Single-seater
Politics
Economics
Social choice
electoral systems

Social choice
Mechanism design
Comparative politics
Comparison
List
By country
Single-winner methods
plurality
First preference plurality (FPP)
Two-round
US
Jungle primary
Partisan primary
Instant-runoff
UK
Alternative vote
US
Ranked-choice (RCV)
Condorcet methods
Condorcet-IRV
Round-robin voting
Minimax
Schulze

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