Congleton: New Boundaries 2018 Calculation

Congleton: Overview

 Projection: CON seat 

Implied MP at 2017: Fiona Bruce  (CON)
County/Area: Cheshire (North West)
Electorate: 71,287
Turnout: 79.1%

 Implied 2017 VotesImplied 2017 Share
CON31,94156.7%
LAB19,24134.1%
LIB2,9085.2%
UKIP1,2902.3%
Green1,0011.8%
CON Majority12,70022.5%

See overview of other seats in North West.

Congleton : Political and Demographic indicators

The table below shows some political and demographic numerical indicators for the new Congleton constituency, the 'North 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.

IndicatorSeatNorth WestAll GB
Party WinnerCONLABCON
Economic Position8° Right6° Left
National Position6° Nat2° Nat1° Int
EU Leave %52%54%52%
British Identity32%28%29%
Good Health56%46%48%
UK Born48%92%88%
Good Education65%37%39%
Good Job81%49%51%
High SEC66%48%51%
Average Age42.048.648.5
ABC1 Class80%50%53%

Congleton ranks #354 for "Leave", #144 for "Right" and #213 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

Congleton: 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 Congleton 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 Congleton

The old seat(s) needed are:

Old seat: Congleton

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

Old seat: CongletonTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Cheshire EastAlsager9,810Congleton3,6192,432736963100007,193
Cheshire EastBrereton Rural3,847Congleton2,105599965160002,821
Cheshire EastCongleton East11,132Congleton4,5952,840438224650008,162
Cheshire EastCongleton West11,020Congleton4,2242,988546235880008,081
Cheshire EastDane Valley7,644Congleton3,9341,195252651590005,605
Cheshire EastMiddlewich11,362Congleton4,3313,541151249590008,331
Cheshire EastOdd Rode6,892Congleton2,9041,6141932041380005,053
Cheshire EastSandbach Elworth3,757Congleton1,55896713766270002,755
Cheshire EastSandbach Ettiley Heath and Wheelock3,706Congleton1,54493910550790002,717
Cheshire EastSandbach Heath and East3,541Congleton1,2451,15514828210002,597
Cheshire EastSandbach Town3,981Congleton1,77194110068380002,918
 Total76,692 31,83019,2112,9021,2901,00000056,233

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

Old seat: Eddisbury

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

Old seat: EddisburyTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Cheshire EastAudlem3,876Crewe and Nantwich2,0275887080610042,830
Cheshire EastBrereton Rural203Congleton11130601000148
Cheshire EastBunbury3,771Eddisbury2,000589766770062,754
Cheshire EastLeighton114Crewe and Nantwich472744000183
Cheshire EastWrenbury3,787Eddisbury2,0925173966490042,767
Cheshire West and ChesterChester Villages1,678Chester, City of7573536914310011,225
Cheshire West and ChesterDavenham and Moulton4,383Eddisbury1,8141,16396754400103,202
Cheshire West and ChesterFarndon3,090Eddisbury1,4695142255420012,256
Cheshire West and ChesterGowy2,287Weaver Vale1,1254236235230021,670
Cheshire West and ChesterMalpas3,268Eddisbury1,70052046203400662,386
Cheshire West and ChesterTarporley3,621Eddisbury1,903513209780042,644
Cheshire West and ChesterTarvin and Kelsall6,790Eddisbury3,3101,1214418740054,959
Cheshire West and ChesterTattenhall3,567Eddisbury1,70366214780120022,606
Cheshire West and ChesterWeaver and Cuddington4,371Weaver Vale1,7611,095178715700313,193
Cheshire West and ChesterWinsford Over and Verdin10,049Eddisbury3,1653,4213572909000177,340
Cheshire West and ChesterWinsford Swanlow and Dene7,401Eddisbury2,0332,6134722077000105,405
Cheshire West and ChesterWinsford Wharton8,015Eddisbury2,1773,10130814311000155,854
 Total70,271 29,19417,2502,8051,1117830017951,322

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

New seat: Congleton

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

New seat: Congleton
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
Cheshire EastAlsager8,998Congleton3,6192,432736963100007,193
Cheshire EastBrereton Rural3,607Congleton2,105598975160002,821
Cheshire EastBrereton Rural190Eddisbury11131501000148
Cheshire EastCongleton East10,104Congleton4,5952,840438224650008,162
Cheshire EastCongleton West10,053Congleton4,2242,988546235880008,081
Cheshire EastDane Valley7,416Congleton3,9341,195252651590005,605
Cheshire EastMiddlewich10,089Congleton4,3313,541151249590008,331
Cheshire EastOdd Rode6,619Congleton2,9041,6141932041380005,053
Cheshire EastSandbach Elworth3,614Congleton1,55896713766270002,755
Cheshire EastSandbach Ettiley Heath and Wheelock3,580Congleton1,54493910550790002,717
Cheshire EastSandbach Heath and East3,318Congleton1,2451,15514828210002,597
Cheshire EastSandbach Town3,699Congleton1,77194110068380002,918
 Total71,287 31,94119,2412,9081,2901,00100056,381

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


© 2017 Martin Baxter
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