Aberdeen North: New Boundaries 2018 Calculation

Aberdeen North: Overview

 Projection: SNP seat 

Implied MP at 2017: Kirsty Blackman  (SNP)
County/Area: Grampian (Scotland)
Electorate: 77,677
Turnout: 61.8%

 Implied 2017 VotesImplied 2017 Share
SNP19,06039.7%
CON13,53628.2%
LAB12,54926.1%
LIB2,5165.2%
OTH3630.8%
SNP Majority5,52411.5%

See overview of other seats in Scotland.

Aberdeen North : Political and Demographic indicators

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

IndicatorSeatScotlandAll GB
Party WinnerSNPSNPCON
Economic Position13° Left14° Left
National Position15° Int17° Int1° Int
EU Leave %42%38%52%
British Identity24%27%29%
Good Health52%52%48%
UK Born86%93%88%
Good Education35%36%39%
Good Job47%49%51%
High SEC50%55%51%
Average Age46.248.748.5
ABC1 Class51%50%53%

Aberdeen North ranks #491 for "Leave", #527 for "Right" and #496 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

Aberdeen North: 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 Aberdeen North 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 Aberdeen North

The old seat(s) needed are:

Old seat: Aberdeen North

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

Old seat: Aberdeen NorthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
SNP
Votes
MIN
Votes
OTH
Votes
Total
Votes
AberdeenBridge of Don1,501Aberdeen North2721516500364036888
AberdeenDyce / Bucksburn / Danestone2,596Aberdeen North39737177006750161,536
AberdeenGeorge St / Harbour10,779Aberdeen South1,4851,639503002,61401366,377
AberdeenHazlehead / Ashley / Queens Cross879Aberdeen South22082840012706519
AberdeenHilton / Stockethill9,623Aberdeen North1,2711,810180002,3410915,693
AberdeenKingswells / Sheddocksley9,125Aberdeen North1,2021,514510002,1180535,397
AberdeenMidstocket / Rosemount5,877Aberdeen North;
Aberdeen South
1,048879106001,4090343,476
AberdeenNorthfield10,706Aberdeen North9702,32466002,9280466,334
AberdeenTillydrone / Seaton / Old Aberdeen11,002Aberdeen North1,4702,25299002,58501046,510
AberdeenTorry / Ferryhill41 7710090024
 Total62,129 8,34211,0291,6910015,170052236,754

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

Old seat: Aberdeen South

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

Old seat: Aberdeen SouthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
SNP
Votes
MIN
Votes
OTH
Votes
Total
Votes
AberdeenAiryhall / Broomhill / Garthdee11,192Aberdeen South3,2731,494564002,332007,663
AberdeenGeorge St / Harbour708Aberdeen South148111340019100484
AberdeenHazlehead / Ashley / Queens Cross11,972Aberdeen South4,3811,074776001,966008,197
AberdeenKincorth / Loirston11,002Aberdeen South2,1432,043388002,960007,534
AberdeenKingswells / Sheddocksley162Aberdeen North34288004300113
AberdeenLower Deeside10,512Aberdeen South4,131946471001,651007,199
AberdeenMidstocket / Rosemount4,137Aberdeen South1,02363864001,107002,832
AberdeenTorry / Ferryhill15,278Aberdeen South3,6142,809295003,7440010,462
 Total64,963 18,7479,1432,6000013,9940044,484

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

Old seat: Gordon

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

Old seat: GordonTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
SNP
Votes
MIN
Votes
OTH
Votes
Total
Votes
AberdeenBridge of Don12,258Aberdeen North3,4401,302709002,929008,380
AberdeenDyce / Bucksburn / Danestone11,244Aberdeen North2,3721,817483003,015007,687
AberdeenshireEast Garioch7,555Gordon and Deeside2,308452570001,835005,165
AberdeenshireEllon and District11,493Banff and Buchan2,8177421,147003,150007,856
AberdeenshireHuntly, Strathbogie and Howe of Alford8,258Gordon and Deeside2,826204815001,801005,646
AberdeenshireInverurie and District10,504Gordon and Deeside2,985932882002,381007,180
AberdeenshireMid Formartine11,534Aberdeen North;
Gordon and Deeside
3,601751805002,728007,885
AberdeenshireTurriff and District1 000000000
AberdeenshireWest Garioch5,684Gordon and Deeside1,510141818001,416003,885
 Total78,531 21,8596,3416,2290019,2550053,684

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

New seat: Aberdeen North

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

New seat: Aberdeen North
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
SNP
Votes
MIN
Votes
OTH
Votes
Total
Votes
AberdeenBridge of Don1,556Aberdeen North4051588400359041,010
AberdeenBridge of Don12,711Gordon3,3071,295690002,9340328,258
AberdeenDyce / Bucksburn / Danestone2,703Aberdeen North51941010500692031,729
AberdeenDyce / Bucksburn / Danestone11,705Gordon2,2501,778455002,9980137,494
AberdeenHilton / Stockethill10,398Aberdeen North1,2711,810180002,3410915,693
AberdeenKingswells / Sheddocksley10,445Aberdeen North1,2141,515509002,1230525,413
AberdeenKingswells / Sheddocksley185Aberdeen South2227900380197
AberdeenMidstocket / Rosemount5,090Aberdeen North1,02675184001,2460173,124
AberdeenNorthfield11,203Aberdeen North9702,32466002,9280466,334
AberdeenTillydrone / Seaton / Old Aberdeen8,278Aberdeen North1,4702,25299002,58501046,510
AberdeenshireMid Formartine3,403Gordon1,08222923500815002,361
 Total77,677 13,53612,5492,5160019,059036348,023

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


© 2017 Martin Baxter
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