Knowledge

Underhang seat

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921: 56: 1057: 896: 908: 1030:'s New Zealand Loyal party only managed to register two candidates on their party list, meaning that if they had exceeded the five percent threshold required to enter parliament (without winning an electorate), it would have resulted in four empty seats in the resulting parliament. Much like the 99 MP party before them, they failed to be elected, receiving just 1.2% of the vote, far short of the required minimum. 1167:(NZ Electoral Commission statement) If NZ Loyal won over five per cent of the party vote, or an electorate seat, they would be allocated seats in Parliament on the basis of their share of the party vote. But if there are insufficient list candidates then the remaining seats aren't filled and remain vacant. 986:
systems, parties receive a number of seats in proportion to the number of votes they received. If a party does not have enough people to fill its vacancies, there is an underhang. For example, if a party wins enough votes for ten seats, but only has seven people nominated on its list, then there is
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A way of dealing with underhangs is to allow the party to nominate additional people to become MPs. However, parties with underhangs usually are not entitled to retroactively add to their list, and lose the potential seats represented by the underhang. Parties aim to avoid the problem by having a
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is a seat that becomes vacant because the party that was entitled to it by virtue of its share of the total votes cast was unable to fill it through having submitted too few candidates.
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in 2014. As she was elected as a regional list MSP as an independent (effectively the sole candidate of "the Margo party") her seat was left vacant until the
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substantially larger list than they would hope to win as seats.
1778: 907: 1147:"Major error impacts minor party's candidates list – Times" 1117:"Liz Gunn's party fails to register nearly all candidates" 1052: 1211:"Scottish politician Margo MacDonald dies aged 70" 1859: 1011:. But because they had just two people on their 1251: 1037:an underhang seat was caused by the death of 943: 1708:Independence of Smith-dominated alternatives 1258: 1244: 1022:The issue of an underhang returned at the 950: 936: 1180:"2023 General Election – Official Result" 1144: 1114: 1703:Independence of irrelevant alternatives 1481:Sequential proportional approval voting 1208: 1115:Mitchell, Charlie (19 September 2023), 14: 1868:Party-list proportional representation 1860: 1145:Harrowell, Chris (28 September 2023), 984:party-list proportional representation 1265: 1239: 1190:from the original on 4 November 2023 1513:Indirect single transferable voting 24: 54: 25: 1879: 1209:Carrell, Severin (4 April 2014), 1024:2023 New Zealand general election 1005:2005 New Zealand general election 1055: 919: 906: 894: 842:McKelvey–Schofield chaos theorem 488:Semi-proportional representation 120:First preference plurality (FPP) 1624:Mixed ballot transferable vote 1202: 1172: 1138: 1108: 1083: 977: 880:Harsanyi's utilitarian theorem 837:Moulin's impossibility theorem 802:Conflicting majorities paradox 13: 1: 1076: 987:an underhang of three seats. 706:Frustrated majorities paradox 1825:Comparison of voting systems 1667:Satisfaction approval voting 1652:Single non-transferable vote 1471:Proportional approval voting 1026:. Due to a missed deadline, 875:Condorcet dominance theorems 815:Social and collective choice 7: 1431:Graduated majority judgment 1048: 994: 964:proportional representation 541:By mechanism of combination 312:Proportional representation 10: 1884: 1683:Condorcet winner criterion 1374:First-past-the-post voting 739:Multiple districts paradox 470:Fractional approval voting 458:Interactive representation 1838: 1830:Voting systems by country 1817: 1771: 1733:Mutual majority criterion 1688:Condorcet loser criterion 1675: 1642: 1634:Vote linkage mixed system 1589: 1554: 1546:Largest remainders method 1521: 1448: 1439: 1290: 1273: 686:Paradoxes and pathologies 535:Mixed-member proportional 530:Mixed-member majoritarian 525:By results of combination 416:Approval-based committees 1723:Majority loser criterion 1609:Additional member system 1567:Hagenbach-Bischoff quota 1486:Single transferable vote 1411:Positional voting system 1347:Minimax Condorcet method 1305:Combined approval voting 1009:House of Representatives 865:Condorcet's jury theorem 666:Double simultaneous vote 641:Rural–urban proportional 636:Dual-member proportional 598: 587: 554:Parallel (superposition) 446:Fractional social choice 433:Expanding approvals rule 262: 247: 232: 163: 152: 128: 1748:Resolvability criterion 1738:Participation criterion 1713:Later-no-harm criterion 1529:Highest averages method 792:Tyranny of the majority 569:Fusion (majority bonus) 386:Quota-remainder methods 1789:First-preference votes 1728:Monotonicity criterion 1698:Independence of clones 1401:Simple majoritarianism 926:Mathematics portal 832:Majority impossibility 821:Impossibility theorems 617:Negative vote transfer 438:Method of equal shares 59: 1693:Consistency criterion 1614:Alternative vote plus 1379:Instant-runoff voting 729:Best-is-worst paradox 718:Pathological response 453:Direct representation 106:Single-winner methods 58: 1763:Seats-to-votes ratio 1534:Webster/Sainte-Laguë 1184:Electoral Commission 913:Economics portal 860:Median voter theorem 79:Comparative politics 1743:Plurality criterion 1342:Kemeny–Young method 1186:. 3 November 2023. 1035:Scottish Parliament 901:Politics portal 612:Vote linkage system 583:Seat linkage system 170:Ranked-choice (RCV) 1784:Election threshold 1718:Majority criterion 1394:Supplementary vote 1091:"99 MP party list" 797:Discursive dilemma 756:Lesser evil voting 631:Supermixed systems 334:Largest remainders 192:Round-robin voting 60: 1855: 1854: 1753:Reversal symmetry 1662:Cumulative voting 1644:Semi-proportional 1619:Mixed single vote 1585: 1584: 1461:Mixed single vote 1369:Exhaustive ballot 1332:Copeland's method 1327:Condorcet methods 1267:Electoral systems 1157:on 6 October 2023 1127:on 9 October 2023 999:If New Zealand's 968:electoral systems 960: 959: 847:Gibbard's theorem 787:Dominance paradox 724:Perverse response 428:Phragmen's method 294:Majority judgment 222:Positional voting 180:Condorcet methods 48:electoral systems 16:(Redirected from 1875: 1794:Liquid democracy 1446: 1445: 1426:Two-round system 1337:Dodgson's method 1260: 1253: 1246: 1237: 1236: 1230: 1229: 1228: 1226: 1217:, archived from 1206: 1200: 1199: 1197: 1195: 1176: 1170: 1169: 1164: 1162: 1153:, archived from 1142: 1136: 1135: 1134: 1132: 1123:, archived from 1112: 1106: 1105: 1104: 1102: 1097:, 24 August 2005 1087: 1065: 1060: 1059: 952: 945: 938: 924: 923: 911: 910: 899: 898: 854:Positive results 749:Strategic voting 646:Majority jackpot 603: 592: 463:Liquid democracy 339:National remnant 329:Highest averages 266: 251: 236: 168: 159:Alternative vote 157: 141:Partisan primary 133: 74:Mechanism design 27: 26: 21: 1883: 1882: 1878: 1877: 1876: 1874: 1873: 1872: 1858: 1857: 1856: 1851: 1834: 1813: 1767: 1758:Smith criterion 1671: 1638: 1599:Parallel voting 1581: 1577:Imperiali quota 1550: 1517: 1435: 1389:Contingent vote 1352:Nanson's method 1310:Unified primary 1300:Approval voting 1286: 1269: 1264: 1234: 1233: 1224: 1222: 1221:on 4 April 2023 1207: 1203: 1193: 1191: 1178: 1177: 1173: 1160: 1158: 1143: 1139: 1130: 1128: 1113: 1109: 1100: 1098: 1089: 1088: 1084: 1079: 1063:Politics portal 1061: 1054: 1051: 1039:Margo MacDonald 997: 980: 956: 918: 917: 905: 893: 885: 884: 851: 827:Arrow's theorem 817: 807: 806: 775: 745: 734:No-show paradox 715: 701:Cloning paradox 691:Spoiler effects 688: 678: 677: 652: 539: 522: 512: 511: 484: 475:Maximal lottery 442: 423:Thiele's method 412: 382: 314: 304: 303: 289:Approval voting 277:Cardinal voting 273: 218: 212:Maximal lottery 176: 108: 98: 23: 22: 15: 12: 11: 5: 1881: 1871: 1870: 1853: 1852: 1839: 1836: 1835: 1833: 1832: 1827: 1821: 1819: 1815: 1814: 1812: 1811: 1806: 1801: 1796: 1791: 1786: 1781: 1775: 1773: 1769: 1768: 1766: 1765: 1760: 1755: 1750: 1745: 1740: 1735: 1730: 1725: 1720: 1715: 1710: 1705: 1700: 1695: 1690: 1685: 1679: 1677: 1673: 1672: 1670: 1669: 1664: 1659: 1657:Limited voting 1654: 1648: 1646: 1640: 1639: 1637: 1636: 1631: 1626: 1621: 1616: 1611: 1606: 1601: 1595: 1593: 1587: 1586: 1583: 1582: 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696:Spoiler effect 689: 684: 683: 680: 679: 676: 675: 670: 669: 668: 655:By ballot type 651: 650: 649: 648: 643: 638: 628: 627: 626: 625: 624: 619: 609: 608: 607: 596: 573: 572: 571: 566: 561: 556: 538: 537: 532: 523: 518: 517: 514: 513: 510: 509: 507:Limited voting 504: 503: 502: 483: 482: 477: 472: 467: 466: 465: 460: 441: 440: 435: 430: 425: 411: 410: 405: 400: 395: 381: 380: 379: 378: 376:Localized list 373: 368: 363: 358: 348: 347: 346: 344:Biproportional 341: 336: 331: 315: 310: 309: 306: 305: 302: 301: 296: 291: 286: 272: 271: 256: 241: 217: 216: 215: 214: 209: 204: 199: 189: 175: 174: 173: 172: 161: 148:Instant-runoff 145: 144: 143: 135:Jungle primary 122: 111:Single vote - 109: 104: 103: 100: 99: 97: 96: 86: 81: 76: 71: 65: 62: 61: 51: 50: 40: 39: 9: 6: 4: 3: 2: 1880: 1869: 1866: 1865: 1863: 1850: 1849: 1844: 1843: 1837: 1831: 1828: 1826: 1823: 1822: 1820: 1816: 1810: 1807: 1805: 1802: 1800: 1797: 1795: 1792: 1790: 1787: 1785: 1782: 1780: 1777: 1776: 1774: 1770: 1764: 1761: 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1320: 1318: 1315: 1311: 1308: 1306: 1303: 1302: 1301: 1298: 1297: 1295: 1293: 1292:Single-winner 1289: 1285: 1283: 1279: 1272: 1268: 1261: 1256: 1254: 1249: 1247: 1242: 1241: 1238: 1220: 1216: 1212: 1205: 1189: 1185: 1181: 1175: 1168: 1156: 1152: 1148: 1141: 1126: 1122: 1121:Waikato Times 1118: 1111: 1096: 1092: 1086: 1082: 1072: 1071:Overhang seat 1069: 1068: 1064: 1058: 1053: 1046: 1044: 1043:next election 1040: 1036: 1031: 1029: 1025: 1020: 1018: 1014: 1010: 1006: 1002: 992: 988: 985: 975: 973: 969: 965: 953: 948: 946: 941: 939: 934: 933: 931: 930: 927: 922: 914: 909: 904: 902: 897: 892: 891: 889: 888: 881: 878: 876: 873: 871: 870:May's theorem 868: 866: 863: 861: 858: 857: 856: 855: 848: 845: 843: 840: 838: 835: 833: 830: 828: 825: 824: 823: 822: 816: 811: 810: 803: 800: 798: 795: 793: 790: 788: 785: 784: 783: 782: 781: 780:majority rule 778:Paradoxes of 772: 769: 767: 764: 762: 759: 757: 754: 753: 752: 751: 750: 740: 737: 736: 735: 732: 730: 727: 725: 722: 721: 720: 719: 712: 709: 707: 704: 702: 699: 697: 694: 693: 692: 687: 682: 681: 674: 671: 667: 664: 663: 662: 659: 658: 657: 656: 647: 644: 642: 639: 637: 634: 633: 632: 629: 623: 620: 618: 615: 614: 613: 610: 606: 601: 597: 595: 590: 586: 585: 584: 581: 580: 579: 578: 574: 570: 567: 565: 562: 560: 557: 555: 552: 551: 550: 549: 544: 543: 542: 536: 533: 531: 528: 527: 526: 521: 520:Mixed systems 516: 515: 508: 505: 501: 498: 497: 496: 493: 492: 491: 490: 489: 481: 480:Random ballot 478: 476: 473: 471: 468: 464: 461: 459: 456: 455: 454: 451: 450: 449: 448: 447: 439: 436: 434: 431: 429: 426: 424: 421: 420: 419: 418: 417: 409: 406: 404: 401: 399: 396: 394: 391: 390: 389: 388: 387: 377: 374: 372: 369: 367: 364: 362: 359: 357: 354: 353: 352: 349: 345: 342: 340: 337: 335: 332: 330: 327: 326: 325: 324:Apportionment 322: 321: 320: 319: 313: 308: 307: 300: 297: 295: 292: 290: 287: 285: 282: 281: 280: 279: 278: 269: 265: 260: 259:Antiplurality 257: 254: 250: 245: 242: 239: 235: 230: 227: 226: 225: 224: 223: 213: 210: 208: 205: 203: 200: 198: 195: 194: 193: 190: 188: 187:Condorcet-IRV 185: 184: 183: 182: 181: 171: 166: 162: 160: 155: 151: 150: 149: 146: 142: 139: 138: 136: 131: 126: 123: 121: 118: 117: 116: 114: 107: 102: 101: 94: 90: 87: 85: 82: 80: 77: 75: 72: 70: 69:Social choice 67: 66: 64: 63: 57: 53: 52: 49: 45: 44:Social choice 42: 41: 37: 33: 29: 28: 19: 1846: 1840: 1456:Mixed-member 1441:Proportional 1416:Score voting 1357:Ranked pairs 1276:Part of the 1275: 1223:, retrieved 1219:the original 1215:The Guardian 1214: 1204: 1192:. Retrieved 1174: 1166: 1159:, retrieved 1155:the original 1150: 1140: 1129:, retrieved 1125:the original 1120: 1110: 1099:, retrieved 1094: 1085: 1032: 1021: 998: 989: 981: 971: 961: 853: 852: 819: 777: 776: 761:Exaggeration 747: 746: 717: 716: 690: 654: 653: 622:Mixed ballot 577:Compensatory 575: 548:compensatory 545: 540: 524: 486: 485: 444: 443: 414: 413: 384: 383: 371:List-free PR 316: 284:Score voting 275: 274: 220: 219: 207:Ranked pairs 178: 177: 110: 1799:Spoilt vote 1562:Droop quota 1501:Schulze STV 1476:Rural–urban 1421:STAR voting 1317:Borda count 1194:14 November 1001:99 MP Party 978:Explanation 661:Single vote 564:Conditional 559:Coexistence 408:Quota Borda 398:Schulze STV 356:Closed list 299:STAR voting 244:Borda count 1818:Comparison 1572:Hare quota 1522:Allocation 1508:Spare vote 1496:Hare-Clark 1466:Party-list 1225:3 February 1161:3 February 1131:3 February 1101:3 February 1077:References 766:Truncation 495:Cumulative 318:Party-list 93:By country 84:Comparison 1809:Unseating 1804:Sortition 1406:Plurality 1282:Economics 1095:NZ Herald 673:Dual-vote 366:Panachage 361:Open list 351:List type 229:Plurality 125:Two-round 113:plurality 36:Economics 18:Underhang 1862:Category 1676:Criteria 1629:Scorporo 1278:politics 1188:Archived 1049:See also 1028:Liz Gunn 995:Examples 393:Hare STV 32:Politics 30:A joint 1848:Project 1539:D'Hondt 1491:CPO-STV 1449:Systems 1033:In the 403:CPO-STV 253:Baldwin 202:Schulze 197:Minimax 115:methods 1842:Portal 1779:Ballot 1555:Quotas 1284:series 982:Under 268:Coombs 38:series 1772:Other 1591:Mixed 970:, an 966:(PR) 605:'MMP' 594:'AMS' 1280:and 1227:2024 1196:2023 1163:2024 1133:2024 1103:2024 1013:list 546:Non- 500:SNTV 89:List 46:and 34:and 1604:MMP 1017:MPs 962:In 264:el. 249:el. 238:IRV 234:el. 1864:: 1845:— 1213:, 1182:. 1165:, 1149:, 1119:, 1093:, 1045:. 600:NZ 589:UK 165:US 154:UK 137:) 130:US 1259:e 1252:t 1245:v 1198:. 951:e 944:t 937:v 602:: 591:: 270:) 261:( 255:) 246:( 240:) 231:( 167:: 156:: 132:: 127:( 95:) 91:( 20:)

Index

Underhang
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
Ranked pairs

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