Billericay: New Boundaries 2018 Calculation

Billericay: Overview

Projection: CON seat

Implied MP at 2017:John Baron  (CON)
County/Area:Essex (Anglia)
Electorate:77,014
Turnout:69.4%

PartyImplied 2017 VotesImplied 2017 Share
CON36,26267.9%
LAB11,37721.3%
LIB2,8325.3%
UKIP2,4024.5%
Green4620.9%
OTH810.2%
CON Majority24,88546.6%

See overview of other seats in Anglia.



Introduction

This page shows the detail of the calculations performed to estimate the general election result for 2017 had the new boundaries for Billericay 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.

Billericay: Map

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

List of old seats forming part of Billericay

The old seat(s) needed are:

Old seat: Basildon and Billericay

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

Old seat: Basildon and BillericayTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
BasildonBillericay East9,061Billericay4,2211,12030324000005,884
BasildonBillericay West9,134Billericay4,2771,21925525000006,001
BasildonBurstead8,430Billericay3,8901,04417822800005,340
BasildonCrouch6,035Billericay3,2709544020900004,473
BasildonFryerns9,123Basildon and East Thurrock3,3202,70621230800006,546
BasildonLaindon Park8,597Billericay3,1692,05120727100005,698
BasildonLee Chapel North8,775Basildon and East Thurrock3,2193,01122031100006,761
BasildonSt Martin's5,730Basildon and East Thurrock2,0161,87513319100004,215
 Total64,885 27,38213,9801,5482,008000044,918

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

Old seat: Maldon

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

Old seat: MaldonTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
ChelmsfordBicknacre and East and West Hanningfield4,102Billericay2,00253717763750052,859
ChelmsfordLittle Baddow, Danbury and Sandon6,613Billericay3,34670935118210300104,701
ChelmsfordRettendon and Runwell4,274Billericay1,845580118160650062,774
ChelmsfordSouth Hanningfield, Stock and Margaretting4,472Billericay2,310478167150330083,146
ChelmsfordSouth Woodham - Chetwood and Collingwood6,347Billericay3,1801,00418123211900254,741
ChelmsfordSouth Woodham - Elmwood and Woodville6,223Billericay3,0151,0022122516700274,574
MaldonAlthorne3,208Witham and Maldon1,640495711432800202,397
MaldonBurnham-on-Crouch North2,901Witham and Maldon1,35353980537400152,114
MaldonBurnham-on-Crouch South3,147Witham and Maldon1,45753398547800122,232
MaldonHeybridge East3,190Witham and Maldon1,506523891343100172,300
MaldonHeybridge West3,014Witham and Maldon1,49663589573500222,334
MaldonMaldon East1,548Witham and Maldon7054834528190031,283
MaldonMaldon North3,189Witham and Maldon1,397694107577900112,345
MaldonMaldon South2,969Witham and Maldon1,61945393543200122,263
MaldonMaldon West3,030Witham and Maldon1,43647888548400172,157
MaldonMayland3,281Witham and Maldon1,85541663572900182,438
MaldonPurleigh2,642Witham and Maldon1,5362513639170031,882
MaldonSouthminster3,105Witham and Maldon1,57359585649000202,427
MaldonTillingham1,669Witham and Maldon8392753068140061,232
 Total68,924 34,11010,6802,1801,9001,0720025750,199

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

Old seat: Saffron Walden

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

Old seat: Saffron WaldenTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
ChelmsfordBoreham and The Leighs4,691Witham and Maldon2,3958034938300003,774
ChelmsfordBroomfield and The Walthams6,367Brentwood and Ongar2,7961,09461929400004,803
ChelmsfordChelmsford Rural West2,181Brentwood and Ongar1,1542881693400001,645
ChelmsfordWrittle4,151Billericay1,73767964316600003,225
UttlesfordAshdon1,560Saffron Walden7712261057700001,179
UttlesfordBroad Oak and the Hallingburys3,033Saffron Walden1,64640319113800002,378
UttlesfordClavering1,776Saffron Walden9382121242500001,299
UttlesfordDebden and Wimbish1,628Saffron Walden1,0042501563100001,441
UttlesfordElsenham and Henham2,800Saffron Walden1,1184475375400002,156
UttlesfordFelsted and Stebbing3,268Saffron Walden1,70548025316400002,602
UttlesfordFlitch Green and Little Dunmow1,546Saffron Walden1,0322931363100001,492
UttlesfordGreat Dunmow North3,154Saffron Walden1,5045282385900002,329
UttlesfordGreat Dunmow South and Barnston4,552Saffron Walden2,3537163578500003,511
UttlesfordHatfield Heath1,676Saffron Walden9272391193000001,315
UttlesfordHigh Easter and The Rodings1,772Saffron Walden9692361312800001,364
UttlesfordLittlebury, Chesterford and Wenden Lofts3,290Saffron Walden1,7454602545400002,513
UttlesfordNewport2,652Saffron Walden1,3074552535100002,066
UttlesfordSaffron Walden Audley3,315Saffron Walden1,4366226336700002,758
UttlesfordSaffron Walden Castle3,002Saffron Walden1,20671329311000002,322
UttlesfordSaffron Walden Shire5,194Saffron Walden2,3701,07349311400004,050
UttlesfordStansted North3,253Saffron Walden1,3134826125700002,464
UttlesfordStansted South and Birchanger3,091Saffron Walden1,0934494764700002,065
UttlesfordStort Valley1,559Saffron Walden7052102552300001,193
UttlesfordTakeley4,300Saffron Walden1,87260726118600002,926
UttlesfordThaxted and the Eastons3,613Saffron Walden1,5944866025800002,740
UttlesfordThe Sampfords1,668Saffron Walden9402131252600001,304
 Total79,092 37,63012,6648,5282,092000060,914

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

New seat: Billericay

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

New seat: Billericay
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
BasildonBillericay East9,057Basildon and Billericay4,2211,12030324000005,884
BasildonBillericay West9,239Basildon and Billericay4,2771,21925525000006,001
BasildonBurstead8,222Basildon and Billericay3,8901,04417822800005,340
BasildonCrouch6,886Basildon and Billericay3,2709544020900004,473
BasildonLaindon Park8,772Basildon and Billericay3,1692,05120727100005,698
ChelmsfordBicknacre and East and West Hanningfield3,813Maldon2,00253717763750052,859
ChelmsfordLittle Baddow, Danbury and Sandon6,271Maldon3,34670935118210300104,701
ChelmsfordRettendon and Runwell3,699Maldon1,845580118160650062,774
ChelmsfordSouth Hanningfield, Stock and Margaretting4,198Maldon2,310478167150330083,146
ChelmsfordSouth Woodham - Chetwood and Collingwood6,325Maldon3,1801,00418123211900254,741
ChelmsfordSouth Woodham - Elmwood and Woodville6,102Maldon3,0151,0022122516700274,574
ChelmsfordWrittle4,430Saffron Walden1,73767964316600003,225
 Total77,014 36,26211,3772,8322,402462008153,416

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