Antrim Mid: New Boundaries 2018 Calculation

Antrim Mid: Overview

 Projection: DUP seat 

Implied MP at 2017: Ian Paisley  (DUP)
County/Area: Antrim (Northern Ireland)
Electorate: 69,572
Turnout: 63.9%

 Implied 2017 VotesImplied 2017 Share
DUP25,01556.3%
SF6,89815.5%
UUP4,83210.9%
MIN3,0856.9%
SDLP2,3835.4%
OTH2,2245.0%
DUP Majority18,11740.8%

See overview of other seats in Northern Ireland.

Antrim Mid: Map

Boundary Lines courtesy of Ordnance Survey OpenData © Crown copyright 2015

Introduction

This page shows the detail of the calculations performed to estimate the general election result for 2017 had the new boundaries for Antrim Mid been in force at that time. The basic idea of the calculation is to look at the district council wards which make up the new seat, and estimate how they voted in 2017. This estimate is based on the recent local election results in those wards, with adjustments made to allow for different turnouts and different voting patterns for local and general elections.

In many cases, wards are divided between several old constituencies or between new constituencies. So the same ward may be shown more than once, but the electorate shown will reflect that ward sub-section.

Election results from a recent local election are given. This is usually the local election closest to 2015 from the period 2012-2015. For multiple-member wards, the votes shown are the sum of the votes cast for all candidates of each party. A negative number indicates candidate(s) elected unopposed.

Calculation method

There are two problems with using the raw (actual) local election results to imply general election results ward-by-ward. Firstly, turnout can be different between local and general elections, which means that the total number of local votes cast does not equal the number of votes cast in each old seat at the general election. To correct for this, we adjust the local votes to match the general election turnout. Each ward's result is scaled, whilst keeping constant the percentage support for each party, so that the total turnout adds up to the old seat's general election turnout. All wards in the old seat are assumed to have the same percentage turnout.

Secondly, even though we now have the correct number of votes in the old seat, the party totals will not match the general election result. Some parties do better at the local election than the general election, and others do vice versa. We call these strong and weak parties respectively. The next step is to transfer votes from strong parties to weak parties. This is done by taking votes proportionally away from strong parties and putting them in a transfer pool. For instance if a party got 12,500 local votes, but only 10,000 general election votes, it will lose 20% over all the wards. These votes in each ward will be put in the ward's transfer pool and allocated to the weak parties. Weak parties will get votes transferred to them in proportion to the votes they need over the old seat. For instance, if two weak parties need 4,000 and 1,000 votes respectively, the first party will get 80% of each ward's transfer pool and the second party will get 20% of each ward's transfer pool. The transfer of votes between parties is done using the Electoral Calculus Transition Model.

More details of the calculation formulas are available.

List of old seats forming part of Antrim Mid

The old seat(s) needed are:

Old seat: Antrim East

The table shows the transfer-adjusted results for each ward in the old seat of Antrim East, as well as showing which new seat each ward is in.

Old seat: Antrim EastTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatUUP
Votes
SDLP
Votes
DUP
Votes
UKIP
Votes
Green
Votes
SF
Votes
MIN
Votes
OTH
Votes
Total
Votes
Antrim and NewtownabbeyAbbey1,437Belfast North36305770010410717871
Antrim and NewtownabbeyBallyduff761Antrim East74826300297512461
Antrim and NewtownabbeyCarnmoney Hill355Belfast North981430026264216
Antrim and NewtownabbeyJordanstown2,199Antrim East215237590084217351,333
Antrim and NewtownabbeyMonkstown2,514Belfast North245268680096248401,523
Antrim and NewtownabbeyRostulla3,107Antrim East303321,07300119307501,884
Causeway Coast and GlensLurigethan2,063Antrim East581216470032089141,249
Causeway Coast and GlensTorr Head and Rathlin813Causeway234825500126356493
Mid and East AntrimBallycarry and Glynn2,316Antrim East249258020091205331,405
Mid and East AntrimBoneybefore2,117Antrim East103247580085270441,284
Mid and East AntrimBurleigh Hill2,040Antrim East180217470078181291,236
Mid and East AntrimCairncastle2,297Antrim East10110673200219201331,392
Mid and East AntrimCarnlough and Glenarm2,207Antrim East9710270400210193311,337
Mid and East AntrimCastle2,546Antrim East1242991200103324531,545
Mid and East AntrimCraigyhill2,833Antrim East12513190300270248401,717
Mid and East AntrimCurran and Inver2,419Antrim East260268370095214351,467
Mid and East AntrimGardenmore2,360Antrim East10410975200225207331,430
Mid and East AntrimGlenwhirry188Antrim Mid9781001331114
Mid and East AntrimGortalee2,307Antrim East204248450088205331,399
Mid and East AntrimGreenisland2,284Antrim East201248360088203331,385
Mid and East AntrimIslandmagee2,260Antrim East243247820088200321,369
Mid and East AntrimKilroot2,992Antrim East145341,07200121381621,815
Mid and East AntrimKilwaughter2,824Antrim East3033097700110250411,711
Mid and East AntrimLove Lane2,286Antrim East111268190092291471,386
Mid and East AntrimSlemish244Antrim Mid1210105001751150
Mid and East AntrimSunnylands2,985Antrim East263311,09500114264431,810
Mid and East AntrimThe Maidens2,562Antrim East11311881700244224361,552
Mid and East AntrimVictoria2,630Antrim East1282994200106335541,594
Mid and East AntrimWhitehead South2,485Antrim East267278600097220361,507
Mid and East AntrimWoodburn2,478Antrim East218269080095220361,503
 Total62,909 4,5231,27921,871003,5535,94896438,138

The full details of these calculations are given on the Antrim East seat details page. Click on "Show workings".

Old seat: Antrim North

The table shows the transfer-adjusted results for each ward in the old seat of Antrim North, as well as showing which new seat each ward is in.

Old seat: Antrim NorthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatUUP
Votes
SDLP
Votes
DUP
Votes
UKIP
Votes
Green
Votes
SF
Votes
MIN
Votes
OTH
Votes
Total
Votes
Causeway Coast and GlensBallycastle2,417Causeway66997920042790751,549
Causeway Coast and GlensBallymoney East2,222Causeway1241027090046612101,423
Causeway Coast and GlensBallymoney North2,332Causeway1301077440048913101,493
Causeway Coast and GlensBallymoney South2,156Causeway120996880045212101,381
Causeway Coast and GlensClogh Mills2,642Antrim Mid1481228430055414121,693
Causeway Coast and GlensDervock2,551Causeway1588599900941631351,634
Causeway Coast and GlensDunloy2,425Antrim Mid1351127740050913111,554
Causeway Coast and GlensGiant's Causeway2,410Causeway1498094400891541271,543
Causeway Coast and GlensKinbane2,469Causeway681018090043692761,582
Causeway Coast and GlensLoughguile and Stranocum2,549Antrim Mid701048350045095791,633
Causeway Coast and GlensRasharkin2,738Antrim Mid1531268730057415121,753
Causeway Coast and GlensRoute2,294Causeway1281067320048112101,469
Causeway Coast and GlensTorr Head and Rathlin1,596Causeway44655230028259491,022
Mid and East AntrimAcademy1,911Antrim Mid3910373700911391151,224
Mid and East AntrimAhoghill2,487Antrim Mid15216941001981561291,592
Mid and East AntrimArdeevin2,459Antrim Mid51132948001181781481,575
Mid and East AntrimBallee and Harryville2,320Antrim Mid127471,0540011180671,486
Mid and East AntrimBallykeel2,266Antrim Mid46122874001081641361,450
Mid and East AntrimBraidwater2,287Antrim Mid47123882001101661381,466
Mid and East AntrimBroughshane2,455Antrim Mid134501,1160011885701,573
Mid and East AntrimCastle Demesne2,346Antrim Mid48126905001121701411,502
Mid and East AntrimCullybackey2,021Antrim Mid12413765001611271051,295
Mid and East AntrimFair Green2,792Antrim Mid581501,077001322021681,787
Mid and East AntrimGalgorm2,206Antrim Mid13514835001761381151,413
Mid and East AntrimGlenravel2,309Antrim Mid126471,0480011180661,478
Mid and East AntrimGlenwhirry1,971Antrim Mid10840895009568571,263
Mid and East AntrimGrange2,399Antrim Mid14715908001911501251,536
Mid and East AntrimKells2,386Antrim Mid130481,0840011483691,528
Mid and East AntrimKirkinriola2,119Antrim Mid116439620010273611,357
Mid and East AntrimMaine2,093Antrim Mid12813792001671311091,340
Mid and East AntrimPark2,089Antrim Mid43113806001001511261,339
Mid and East AntrimPortglenone2,134Antrim Mid13114807001701341111,367
Mid and East AntrimSlemish1,804Antrim Mid9837819008762521,155
 Total75,655 3,4812,57428,520007,8753,2812,72448,455

The full details of these calculations are given on the Antrim North seat details page. Click on "Show workings".

Old seat: Antrim South

The table shows the transfer-adjusted results for each ward in the old seat of Antrim South, as well as showing which new seat each ward is in.

Old seat: Antrim SouthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatUUP
Votes
SDLP
Votes
DUP
Votes
UKIP
Votes
Green
Votes
SF
Votes
MIN
Votes
OTH
Votes
Total
Votes
Antrim and NewtownabbeyAldergrove2,983Antrim South5951575900043511001,887
Antrim and NewtownabbeyAntrim Centre2,543Antrim South501966310023414701,609
Antrim and NewtownabbeyBallyclare East2,875Antrim East663207870017817001,818
Antrim and NewtownabbeyBallyclare West2,386Antrim East550176530014814101,509
Antrim and NewtownabbeyBallyduff1,425Antrim East334113700092940901
Antrim and NewtownabbeyBallyhenry971Belfast North1723321300147490614
Antrim and NewtownabbeyBallynure2,304Antrim East532166310014313601,458
Antrim and NewtownabbeyBallyrobert2,331Antrim East537166390014413801,474
Antrim and NewtownabbeyBurnthill1,964Belfast North34767432002979901,242
Antrim and NewtownabbeyCarnmoney1,739Belfast North30859382002638801,100
Antrim and NewtownabbeyCarnmoney Hill251Belfast North313880021160159
Antrim and NewtownabbeyClady2,238Antrim South446118443003278201,416
Antrim and NewtownabbeyCranfield2,239Antrim Mid344119504003985101,416
Antrim and NewtownabbeyCrumlin2,722Antrim South5431435380039710001,721
Antrim and NewtownabbeyDoagh2,295Antrim Mid530166280014213601,452
Antrim and NewtownabbeyFairview2,122Antrim East498165520013714001,343
Antrim and NewtownabbeyFountain Hill2,129Antrim South419805280019612301,346
Antrim and NewtownabbeyGreystone2,156Antrim South425815350019812401,363
Antrim and NewtownabbeyHightown738Belfast North1312516200112370467
Antrim and NewtownabbeyJordanstown170Antrim East401440011110107
Antrim and NewtownabbeyMallusk3,217Antrim South6421696360046911902,035
Antrim and NewtownabbeyMossley2,533Antrim East594196590016316701,602
Antrim and NewtownabbeyParkgate2,098Antrim Mid322112473003734801,328
Antrim and NewtownabbeyRandalstown2,512Antrim Mid386134566004465801,590
Antrim and NewtownabbeyShilvodan2,345Antrim Mid360125528004165401,483
Antrim and NewtownabbeySpringfarm3,388Antrim South6681278410031219602,144
Antrim and NewtownabbeySteeple2,486Antrim South490946170022814401,573
Antrim and NewtownabbeyStiles2,634Antrim South519996540024315201,667
Antrim and NewtownabbeyTemplepatrick2,142Antrim South427113424003127901,355
Antrim and NewtownabbeyToome2,443Antrim Mid375130550004345601,545
Lisburn and CastlereaghGlenavy2,453Antrim South36391768002428701,551
Lisburn and CastlereaghStonyford1,415Antrim South2095344300140500895
 Total68,247 13,3012,36016,509007,7983,202043,170

The full details of these calculations are given on the Antrim South seat details page. Click on "Show workings".

New seat: Antrim Mid

The new seat of Antrim Mid is made up of the following wards, with the transfer-adjusted votes shown.

New seat: Antrim Mid
DistrictWardElectorate
2017
Old Seat UUP
Votes
SDLP
Votes
DUP
Votes
UKIP
Votes
Green
Votes
SF
Votes
MIN
Votes
OTH
Votes
Total
Votes
Antrim and NewtownabbeyCranfield2,239Antrim South344119504003985101,416
Antrim and NewtownabbeyDoagh2,295Antrim South530166280014213601,452
Antrim and NewtownabbeyParkgate2,098Antrim South322112473003734801,328
Antrim and NewtownabbeyRandalstown2,512Antrim South386134566004465801,590
Antrim and NewtownabbeyShilvodan2,345Antrim South360125528004165401,483
Antrim and NewtownabbeyToome2,443Antrim South375130550004345601,545
Causeway Coast and GlensClogh Mills2,642Antrim North1481228430055414121,693
Causeway Coast and GlensDunloy2,425Antrim North1351127740050913111,554
Causeway Coast and GlensLoughguile and Stranocum2,549Antrim North701048350045095791,633
Causeway Coast and GlensRasharkin2,738Antrim North1531268730057415121,753
Mid and East AntrimAcademy1,911Antrim North3910373700911391151,224
Mid and East AntrimAhoghill2,487Antrim North15216941001981561291,592
Mid and East AntrimArdeevin2,459Antrim North51132948001181781481,575
Mid and East AntrimBallee and Harryville2,320Antrim North127471,0540011180671,486
Mid and East AntrimBallykeel2,266Antrim North46122874001081641361,450
Mid and East AntrimBraidwater2,287Antrim North47123882001101661381,466
Mid and East AntrimBroughshane2,455Antrim North134501,1160011885701,573
Mid and East AntrimCastle Demesne2,346Antrim North48126905001121701411,502
Mid and East AntrimCullybackey2,021Antrim North12413765001611271051,295
Mid and East AntrimFair Green2,792Antrim North581501,077001322021681,787
Mid and East AntrimGalgorm2,206Antrim North13514835001761381151,413
Mid and East AntrimGlenravel2,309Antrim North126471,0480011180661,478
Mid and East AntrimGlenwhirry188Antrim East9781001331114
Mid and East AntrimGlenwhirry1,971Antrim North10840895009568571,263
Mid and East AntrimGrange2,399Antrim North14715908001911501251,536
Mid and East AntrimKells2,386Antrim North130481,0840011483691,528
Mid and East AntrimKirkinriola2,119Antrim North116439620010273611,357
Mid and East AntrimMaine2,093Antrim North12813792001671311091,340
Mid and East AntrimPark2,089Antrim North43113806001001511261,339
Mid and East AntrimPortglenone2,134Antrim North13114807001701341111,367
Mid and East AntrimSlemish244Antrim East1210105001751150
Mid and East AntrimSlemish1,804Antrim North9837819008762521,155
 Total69,572 4,8322,38325,015006,8983,0852,22444,437

And these are the implied results for 2017 for the new seat of Antrim Mid. Please note that the wards used are those of 2015 in order to be consistent with those used by the Boundary Commissions.


© 2019 Electoral Calculus Ltd
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