Devon Central: New Boundaries 2018 Calculation

Devon Central: Overview

 Projection: CON seat 

Implied MP at 2017: Mel Stride  (CON)
County/Area: Devon (South West)
Electorate: 75,355
Turnout: 77.1%

 Implied 2017 VotesImplied 2017 Share
CON31,68054.5%
LAB15,06625.9%
LIB7,34412.6%
Green1,5552.7%
UKIP1,1702.0%
MIN7461.3%
OTH5510.9%
CON Majority16,61428.6%

See overview of other seats in South West.

Devon Central : Political and Demographic indicators

The table below shows some political and demographic numerical indicators for the new Devon Central constituency, the 'South West' area and nation.

The political measures include the Left/Right and International/National axes (what does this mean).

The demographic measures are from the 2011 Census and include categories relating to national identity, economic activity, health and education. These categories are those which have the most relevance to political attitudes.

IndicatorSeatSouth WestAll GB
Party WinnerCONCONCON
Economic Position2° Right1° Right
National Position2° Nat1° Nat1° Int
EU Leave %52%53%52%
British Identity28%27%29%
Good Health46%47%48%
UK Born95%92%88%
Good Education41%40%39%
Good Job47%50%51%
High SEC51%52%51%
Average Age53.550.548.5
ABC1 Class50%54%53%

Devon Central ranks #327 for "Leave", #293 for "Right" and #316 for "National" out of 600 new seats.

Indicators: Legend and Descriptions

Indicators : Legend and Descriptions

The colour scheme used in the table above is explained in the legend table below. The eight census indicators (British Identity, Good Health, UK Born, Good Education, Good Job, High SEC, Average Age and AB1 Class) all use the same 'Census' colour scheme indicating whether the area's level is above or below the national average.

TopicCat 1Cat 2Cat 3Cat 4Cat 5
Economic PositionVery LeftLeftCentristRightVery Right
National PositionVery IntInternationalCentristNationalVery Nat
EU Leave %Very RemainRemainBalancedLeaveVery Leave
CensusVery LowLowMediumHighVery High

Indicator definitions are given in terms of political data definitions or census categories:

IndicatorCensus
Question
Definition / Included Census Categories
Party WinnerArea party winner : actual election result or projected by Electoral Calculus
Economic PositionEconomic position between 100° Left and 100° Right, estimated by Electoral Calculus from political and demographic data.
National PositionNational position between 100° International and 100° National, estimated by Electoral Calculus from political and demographic data.
EU Leave %EU Referendum vote share for 'Leave' : actual result or estimate
British IdentityNational Identity (KS202)Those answering British, British-Other, or Scottish-British
Good HealthHealth (KS301)Those answering 'Very Good Health'
UK BornCountry of Birth (QS203)Those answering England, Northern Ireland, Scotland, Wales, GB Other, or UK Other
Good EducationHighest level of Qualification (QS501)Level 3 (A-level equivalent) or Level 4+ (degree equivalent)
Good JobOccupation (QS606)Occupation codes 1xx to 4xx (Managers, Professionals, Associates, and office workers)
High SECNS-SeC of Household Reference Person (QS609)National Statistics Socio-economic Classification from 1 to 4 (higher managers and professionals, lower managers and professionals, intermediate occupations, small employers and self-employed).
Average AgeAge (QS103)Average age of adults (18 years and above)
ABC1 ClassApproximated Social Grade (QS611)Approximated social grades A, B and C1

Devon Central: 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 Devon Central 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 Devon Central

The old seat(s) needed are:

Old seat: Devon Central

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

Old seat: Devon CentralTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
East DevonExe Valley1,703Devon East833310932321029151,324
Mid DevonBradninch1,710Devon Central68633525421210951,331
Mid DevonCadbury1,366Devon Central579286846219021111,062
Mid DevonLawrence3,146Devon Central1,02671747313070020112,447
Mid DevonSandford and Creedy2,865Devon Central1,3635461853468021112,228
Mid DevonSilverton1,550Devon Central561336226244101261,206
Mid DevonTaw1,370Devon Central63825013618140741,067
Mid DevonTaw Vale1,367Devon Central601279120212801051,064
Mid DevonUpper Yeo1,468Devon Central7762507417150631,141
Mid DevonWay1,360Devon Central68326265151601161,058
TeignbridgeAshburton and Buckfastleigh6,457Devon Central2,2881,49583386170097535,022
TeignbridgeBovey6,433Devon Central2,5941,32071495148085465,002
TeignbridgeChudleigh5,136Newton Abbot2,1281,17236373141076413,994
TeignbridgeHaytor2,398Devon Central1,0154522913427031171,867
TeignbridgeKenn Valley4,951Newton Abbot2,08593262762114020113,851
TeignbridgeMoorland2,346Devon Central9525331503482048261,825
TeignbridgeTeignbridge North2,209Devon Central9804341953225034181,718
TeignbridgeTeign Valley2,242Devon Central1,0084531232864043231,742
Mid DevonBoniface3,212Devon Central95379348713887026142,498
Mid DevonNewbrooke1,288Devon Central57729871141601791,002
Mid DevonYeo2,890Devon Central1,3215203043631023132,248
West DevonBridestowe218Devon Central96461137042169
West DevonChagford1,201Devon Central50326674183902212934
West DevonDrewsteignton1,362Devon Central7162236515310531,058
West DevonExbourne3,084Devon Central1,5565831414430029162,399
West DevonHatherleigh2,466Devon Central1,292426120342501581,920
West DevonOkehampton North3,723Devon Central1,5748542136092067362,896
West DevonOkehampton South3,213Devon Central1,24882218213238050272,499
West DevonSouth Tawton1,637Devon Central645405952553033181,274
 Total74,371 31,27715,5986,7691,3281,533087147057,846

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

Old seat: Devon West and Torridge

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

Old seat: Devon West and TorridgeTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
TorridgeAppledore2,332Bideford, Bude and Launceston97835430506000261,723
TorridgeBideford East4,969Bideford, Bude and Launceston1,7121,114664012200583,670
TorridgeBideford North4,822Bideford, Bude and Launceston1,5001,087805011700523,561
TorridgeBideford South4,421Bideford, Bude and Launceston1,3131,24862105600283,266
TorridgeBroadheath1,415Bideford, Bude and Launceston7591441200130081,044
TorridgeClinton1,274Devon Central5401791700320019940
TorridgeClovelly Bay1,337Bideford, Bude and Launceston606195163017007988
TorridgeCoham Bridge1,290Bideford, Bude and Launceston6611431210120016953
TorridgeForest1,436Bideford, Bude and Launceston70916314902800131,062
TorridgeHartland and Bradworthy2,494Bideford, Bude and Launceston1,02937034706800291,843
TorridgeHolsworthy3,237Bideford, Bude and Launceston1,41645843906300152,391
TorridgeKenwith1,424Bideford, Bude and Launceston7771291270130061,052
TorridgeMonkleigh and Littleham1,165Bideford, Bude and Launceston5101601480290014861
TorridgeNortham4,615Bideford, Bude and Launceston1,97580551905600543,409
TorridgeOrchard Hill1,278Bideford, Bude and Launceston632150140016006944
TorridgeShebbear and Langtree1,659Bideford, Bude and Launceston8501801590300071,226
TorridgeTamarside1,418Bideford, Bude and Launceston63520417701500171,048
TorridgeThree Moors1,358Devon Central6821471410270061,003
TorridgeTorrington4,728Devon Central1,713906682013300593,493
TorridgeTwo Rivers1,416Devon Central75513712901400101,045
TorridgeWaldon1,399Bideford, Bude and Launceston63220017101300171,033
TorridgeWestward Ho!1,734Bideford, Bude and Launceston74824921604200261,281
TorridgeWinkleigh1,722Devon Central74421824803600261,272
West DevonBere Ferrers2,897Plympton, Tavistock and Ivybridge1,17248737307000372,139
West DevonBridestowe2,276Devon Central1,01529528805600281,682
West DevonBuckland Monachorum3,099Plympton, Tavistock and Ivybridge1,40738039607400312,288
West DevonBurrator2,995Plympton, Tavistock and Ivybridge1,23544841508000342,212
West DevonDartmoor1,829Plympton, Tavistock and Ivybridge8972101980380081,351
West DevonMary Tavy1,284Plympton, Tavistock and Ivybridge5851681640150016948
West DevonMilton Ford1,570Plympton, Tavistock and Ivybridge80117115801500141,159
West DevonTamarside1,436Plympton, Tavistock and Ivybridge67019316701500161,061
West DevonTavistock North4,115Plympton, Tavistock and Ivybridge1,627666586011400473,040
West DevonTavistock South East3,004Plympton, Tavistock and Ivybridge1,36139836606700282,220
West DevonTavistock South West3,077Plympton, Tavistock and Ivybridge96757065406700152,273
 Total80,525 33,61312,92610,52601,6230079359,481

The full details of these calculations are given on the Devon West and Torridge seat details page. Click on "Show workings".

New seat: Devon Central

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

New seat: Devon Central
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Mid DevonBoniface3,212Devon Central95379348713887026142,498
Mid DevonBradninch1,710Devon Central68633525421210951,331
Mid DevonCadbury1,366Devon Central579286846219021111,062
Mid DevonLawrence3,146Devon Central1,02671747313070020112,447
Mid DevonNewbrooke1,288Devon Central57729871141601791,002
Mid DevonSandford and Creedy2,865Devon Central1,3635461853468021112,228
Mid DevonSilverton1,550Devon Central561336226244101261,206
Mid DevonTaw1,370Devon Central63825013618140741,067
Mid DevonTaw Vale1,367Devon Central601279120212801051,064
Mid DevonUpper Yeo1,468Devon Central7762507417150631,141
Mid DevonWay1,360Devon Central68326265151601161,058
Mid DevonYeo2,890Devon Central1,3215203043631023132,248
TeignbridgeAshburton and Buckfastleigh6,457Devon Central2,2881,49583386170097535,022
TeignbridgeBovey6,433Devon Central2,5941,32071495148085465,002
TeignbridgeHaytor2,398Devon Central1,0154522913427031171,867
TeignbridgeMoorland2,346Devon Central9525331503482048261,825
TeignbridgeTeign Valley2,242Devon Central1,0084531232864043231,742
TeignbridgeTeignbridge North2,209Devon Central9804341953225034181,718
TorridgeClinton1,274Devon West and Torridge5401791700320019940
TorridgeThree Moors1,358Devon West and Torridge6821471410270061,003
TorridgeTorrington4,728Devon West and Torridge1,713906682013300593,493
TorridgeTwo Rivers1,416Devon West and Torridge75513712901400101,045
TorridgeWinkleigh1,722Devon West and Torridge74421824803600261,272
West DevonBridestowe218Devon Central96461137042169
West DevonBridestowe2,276Devon West and Torridge1,01529528805600281,682
West DevonChagford1,201Devon Central50326674183902212934
West DevonDrewsteignton1,362Devon Central7162236515310531,058
West DevonExbourne3,084Devon Central1,5565831414430029162,399
West DevonHatherleigh2,466Devon Central1,292426120342501581,920
West DevonOkehampton North3,723Devon Central1,5748542136092067362,896
West DevonOkehampton South3,213Devon Central1,24882218213238050272,499
West DevonSouth Tawton1,637Devon Central645405952553033181,274
 Total75,355 31,68015,0667,3441,1701,555074655158,112

And these are the implied results for 2017 for the new seat of Devon Central.


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