Stoke-on-Trent South and Stone: New Boundaries 2018 Calculation

Stoke-on-Trent South and Stone: Overview

Projection: CON seat

Implied MP at 2017:Jack Brereton  (CON)
County/Area:Staffordshire (West Midlands)
Electorate:73,729
Turnout:66.7%

PartyImplied 2017 VotesImplied 2017 Share
CON26,82154.5%
LAB19,73740.1%
LIB1,4803.0%
Green7031.4%
UKIP4530.9%
CON Majority7,08414.4%

See overview of other seats in West Midlands.



Introduction

This page shows the detail of the calculations performed to estimate the general election result for 2017 had the new boundaries for Stoke-on-Trent South and Stone 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.

Stoke-on-Trent South and Stone: Map

Boundary Lines courtesy of Ordnance Survey OpenData © Crown copyright 2015, Map © OpenStreetMap contributors

List of old seats forming part of Stoke-on-Trent South and Stone

The old seat(s) needed are:

Old seat: Stoke-on-Trent Central

The table shows the transfer-adjusted results for each ward in the old seat of Stoke-on-Trent Central, as well as showing which new seat each ward is in.

Old seat: Stoke-on-Trent CentralTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Stoke-on-TrentAbbey Hulton and Townsend7,352Stoke-on-Trent Central1,5112,025262385100193,870
Stoke-on-TrentBaddeley, Milton and Norton3,554Stoke-on-Trent North and Kidsgrove9957061710080091,835
Stoke-on-TrentBentilee and Ubberley7,346Stoke-on-Trent Central1,5092,459282621900204,297
Stoke-on-TrentBirches Head and Central Forest Park8,061Stoke-on-Trent Central1,7652,2141221352600244,286
Stoke-on-TrentBoothen and Oak Hill4,338Stoke-on-Trent Central1,0321,172731533600142,480
Stoke-on-TrentEaton Park3,675Stoke-on-Trent Central6989932758800101,794
Stoke-on-TrentEtruria and Hanley2,637Stoke-on-Trent Central5831,0653686220041,796
Stoke-on-TrentHanford and Trentham3Stoke-on-Trent South and Stone110000002
Stoke-on-TrentHanley Park and Shelton2,496Stoke-on-Trent Central7721,55076564800572,559
Stoke-on-TrentHartshill and Basford4,582Stoke-on-Trent Central1,1071,225671464000112,596
Stoke-on-TrentJoiner's Square3,759Stoke-on-Trent Central7131,093511133100122,013
Stoke-on-TrentPenkhull and Stoke4,682Stoke-on-Trent Central1,1521,20773774800152,572
Stoke-on-TrentSneyd Green808Stoke-on-Trent North and Kidsgrove2022096132002434
Stoke-on-TrentSpringfields and Trent Vale4,688Stoke-on-Trent Central1,1461,163761703700132,605
 Total57,981 13,18617,0826781,6073760021033,139

The full details of these calculations are given on the Stoke-on-Trent Central seat details page. Click on "Show workings".

Old seat: Stoke-on-Trent South

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

Old seat: Stoke-on-Trent SouthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Stoke-on-TrentBlurton East4,226Stoke-on-Trent South and Stone1,2331,207460360002,522
Stoke-on-TrentBlurton West and Newstead4,140Stoke-on-Trent South and Stone1,1061,621490400002,816
Stoke-on-TrentBroadway and Longton East4,002Stoke-on-Trent South and Stone1,1471,230560350002,468
Stoke-on-TrentDresden and Florence3,793Stoke-on-Trent South and Stone1,1401,208420350002,425
Stoke-on-TrentFenton East4,307Stoke-on-Trent Central1,2821,475610450002,863
Stoke-on-TrentFenton West and Mount Pleasant4,073Stoke-on-Trent Central1,3431,292630450002,743
Stoke-on-TrentHanford and Trentham9,516Stoke-on-Trent South and Stone3,3661,9581180760005,518
Stoke-on-TrentHanley Park and Shelton11Stoke-on-Trent Central4710100013
Stoke-on-TrentHollybush and Longton West4,438Stoke-on-Trent South and Stone1,1611,480480330002,722
Stoke-on-TrentLightwood North and Normacot3,766Stoke-on-Trent South and Stone1,3021,157310290002,519
Stoke-on-TrentMeir Hay4,023Stoke-on-Trent Central1,2981,100560290002,483
Stoke-on-TrentMeir North4,507Stoke-on-Trent South and Stone1,1261,601440390002,810
Stoke-on-TrentMeir Park3,886Stoke-on-Trent South and Stone1,566615460260002,253
Stoke-on-TrentMeir South3,826Stoke-on-Trent South and Stone1,0861,473340330002,626
Stoke-on-TrentSandford Hill4,405Stoke-on-Trent Central1,1591,492670370002,755
Stoke-on-TrentWeston Coyney3,924Stoke-on-Trent South and Stone1,1338734801060002,160
 Total66,843 20,45219,789810064500041,696

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

Old seat: Stone

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

Old seat: StoneTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Newcastle-under-LymeLoggerheads and Whitmore5,403Newcastle-under-Lyme2,933906119611130004,132
Newcastle-under-LymeMadeley3,283Newcastle-under-Lyme1,38084115445820002,502
StaffordBarlaston2,164Stoke-on-Trent South and Stone1,2223675427150001,685
StaffordEccleshall5,074Stafford2,742867143151400003,943
StaffordFulford4,658Stoke-on-Trent South and Stone2,42188513366350003,540
StaffordGnosall and Woodseaves5,177Stafford2,555917143143390003,797
StaffordMilwich2,797Stafford1,6764017130620002,240
StaffordSeighford and Church Eaton2,073Stafford9983185023150001,404
StaffordSt Michael's and Stonefield7,766Stoke-on-Trent South and Stone3,3972,153414238810006,283
StaffordSwynnerton and Oulton4,679Stoke-on-Trent South and Stone2,46671113351370003,398
StaffordWalton4,548Stoke-on-Trent South and Stone1,9481,19718471470003,447
Staffordshire MoorlandsCheadle North East2,771Staffordshire Moorlands1,126812111130270002,206
Staffordshire MoorlandsCheadle South East2,928Staffordshire Moorlands1,22775310946260002,161
Staffordshire MoorlandsCheadle West4,060Staffordshire Moorlands1,6301,05614758260002,917
Staffordshire MoorlandsCheckley4,612Staffordshire Moorlands2,19198311260280003,374
Staffordshire MoorlandsForsbrook4,182Staffordshire Moorlands1,703951145168340003,001
 Total66,175 31,61514,1182,2221,36870700050,030

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

New seat: Stoke-on-Trent South and Stone

The new seat of Stoke-on-Trent South and Stone is made up of the following wards, with the transfer-adjusted votes shown.

New seat: Stoke-on-Trent South and Stone
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
StaffordBarlaston2,284Stone1,2223675427150001,685
StaffordFulford4,798Stone2,42188513366350003,540
StaffordSt Michael's and Stonefield8,519Stone3,3972,153414238810006,283
StaffordSwynnerton and Oulton4,606Stone2,46671113351370003,398
StaffordWalton4,672Stone1,9481,19718471470003,447
Stoke-on-TrentBlurton East3,996Stoke-on-Trent South1,2331,207460360002,522
Stoke-on-TrentBlurton West and Newstead4,459Stoke-on-Trent South1,1061,621490400002,816
Stoke-on-TrentBroadway and Longton East3,908Stoke-on-Trent South1,1471,230560350002,468
Stoke-on-TrentDresden and Florence3,841Stoke-on-Trent South1,1401,208420350002,425
Stoke-on-TrentHanford and Trentham3Stoke-on-Trent Central110000002
Stoke-on-TrentHanford and Trentham8,740Stoke-on-Trent South3,3661,9581180760005,518
Stoke-on-TrentHollybush and Longton West4,312Stoke-on-Trent South1,1611,480480330002,722
Stoke-on-TrentLightwood North and Normacot3,991Stoke-on-Trent South1,3021,157310290002,519
Stoke-on-TrentMeir North4,451Stoke-on-Trent South1,1261,601440390002,810
Stoke-on-TrentMeir Park3,567Stoke-on-Trent South1,566615460260002,253
Stoke-on-TrentMeir South4,160Stoke-on-Trent South1,0861,473340330002,626
Stoke-on-TrentWeston Coyney3,422Stoke-on-Trent South1,1338734801060002,160
 Total73,729 26,82119,7371,48045370300049,194

And these are the implied results for 2017 for the new seat of Stoke-on-Trent South and Stone. Please note that the wards used are those of 2015 in order to be consistent with those used by the Boundary Commissions.


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