Hampstead: New Boundaries 2018 Calculation

Hampstead: Overview

 Projection: LAB seat 

Implied MP at 2017: Tulip Siddiq  (LAB)
County/Area: Camden (London)
Electorate: 75,774
Turnout: 77.4%

 Implied 2017 VotesImplied 2017 Share
LAB29,59350.5%
CON23,05839.3%
LIB4,9528.4%
Green9121.6%
OTH960.2%
UKIP240.0%
LAB Majority6,53511.1%

See overview of other seats in London.

Hampstead : Political and Demographic indicators

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

IndicatorSeatLondonAll GB
Party WinnerLABLABCON
Economic Position16° Right11° Right
National Position36° Int29° Int1° Int
EU Leave %27%40%52%
British Identity24%38%29%
Good Health44%50%48%
UK Born96%64%88%
Good Education28%48%39%
Good Job39%61%51%
High SEC36%55%51%
Average Age49.344.148.5
ABC1 Class37%62%53%

Hampstead ranks #580 for "Leave", #32 for "Right" and #582 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

Hampstead: 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 Hampstead 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 Hampstead

The old seat(s) needed are:

Old seat: Finchley and Golders Green

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

Old seat: Finchley and Golders GreenTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
BarnetChilds Hill12,151Hampstead3,7343,6881,17917850008,703
BarnetEast Finchley9,687Finchley and Enfield Southgate2,0414,071486602800006,938
BarnetFinchley Church End9,535Chipping Barnet4,0512,35230480420006,829
BarnetGarden Suburb9,620Hampstead4,4932,0133194620006,891
BarnetGolders Green11,411Hendon4,7942,899308711020008,174
BarnetWest Finchley10,041Chipping Barnet2,5823,924444771640007,191
BarnetWoodhouse10,693Finchley and Enfield Southgate2,9043,9944241531830007,658
 Total73,138 24,59922,9413,46446291800052,384

The full details of these calculations are given on the Finchley and Golders Green seat details page. Click on "Show workings".

Old seat: Hampstead and Kilburn

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

Old seat: Hampstead and KilburnTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
BrentBrondesbury Park8,355Willesden and Shepherd's Bush2,2483,3252720290085,882
BrentKilburn10,452Kilburn1,2345,71927805200767,359
BrentQueens Park9,833Kilburn1,5804,731394019800206,923
CamdenBelsize8,158Hampstead2,1532,89157008200485,744
CamdenFortune Green7,543Hampstead1,5103,1256080660025,311
CamdenFrognal and Fitzjohns7,701Hampstead3,0701,9992810670055,422
CamdenHampstead Town7,204Hampstead2,0502,355534012200125,073
CamdenKilburn7,756Hampstead1,0104,0413650370085,461
CamdenSwiss Cottage8,266Hampstead2,5472,9442760500045,821
CamdenWest Hampstead7,689Hampstead1,5023,33552303900145,413
 Total82,957 18,90434,4654,10107420019758,409

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

Old seat: Holborn and St Pancras

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

Old seat: Holborn and St PancrasTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
CamdenBloomsbury7,115Cities of London and Westminster1,2102,867426911730004,767
CamdenCamden Town with Primrose Hill8,246Camden and St Pancras1,2003,784332917000285,523
CamdenCantelowes7,786Camden and St Pancras6723,90041942160055,216
CamdenGospel Oak7,358Camden and St Pancras1,0593,38523713510200114,929
CamdenHaverstock8,115Camden and St Pancras8333,710715771010015,437
CamdenHighgate7,160Hampstead9893,20229733020034,796
CamdenHolborn and Covent Garden8,455Cities of London and Westminster1,2373,9932624710900155,663
CamdenKentish Town8,740Camden and St Pancras7944,1584836134800105,854
CamdenKing's Cross7,220Camden and St Pancras9673,254354282260074,836
CamdenRegent's Park8,840Camden and St Pancras1,1874,2312001921050045,919
CamdenSt Pancras and Somers Town9,052Camden and St Pancras6884,859296811300096,063
 Total88,087 10,83641,3434,0217281,982009359,003

The full details of these calculations are given on the Holborn and St Pancras seat details page. Click on "Show workings".

New seat: Hampstead

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

New seat: Hampstead
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
BarnetChilds Hill9,607Finchley and Golders Green3,7343,6881,17917850008,703
BarnetGarden Suburb9,457Finchley and Golders Green4,4932,0133194620006,891
CamdenBelsize7,099Hampstead and Kilburn2,1532,89157008200485,744
CamdenFortune Green7,116Hampstead and Kilburn1,5103,1256080660025,311
CamdenFrognal and Fitzjohns6,160Hampstead and Kilburn3,0701,9992810670055,422
CamdenHampstead Town6,609Hampstead and Kilburn2,0502,355534012200125,073
CamdenHighgate7,653Holborn and St Pancras9893,20229733020034,796
CamdenKilburn7,369Hampstead and Kilburn1,0104,0413650370085,461
CamdenSwiss Cottage7,459Hampstead and Kilburn2,5472,9442760500045,821
CamdenWest Hampstead7,245Hampstead and Kilburn1,5023,33552303900145,413
 Total75,774 23,05829,5934,95224912009658,635

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


© 2017 Martin Baxter
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