Rushcliffe North and Clifton: New Boundaries 2018 Calculation

Rushcliffe North and Clifton: Overview

Projection: CON seat

Implied MP at 2017:Kenneth Clarke  (CON)
County/Area:Nottinghamshire (East Midlands)
Electorate:74,143
Turnout:75.5%

PartyImplied 2017 VotesImplied 2017 Share
CON25,88646.2%
LAB24,83344.3%
LIB2,4504.4%
Green1,4532.6%
UKIP1,3862.5%
CON Majority1,0531.9%

See overview of other seats in East Midlands.



Introduction

This page shows the detail of the calculations performed to estimate the general election result for 2017 had the new boundaries for Rushcliffe North and Clifton 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.

Rushcliffe North and Clifton: Map

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

List of old seats forming part of Rushcliffe North and Clifton

The old seat(s) needed are:

Old seat: Nottingham South

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

Old seat: Nottingham SouthTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
NottinghamBridge8,188Nottingham West and Beeston1,4434,5912511511030006,539
NottinghamClifton North9,537Rushcliffe North and Clifton2,1013,307138169290005,744
NottinghamClifton South10,154Rushcliffe North and Clifton1,8683,927156192780006,221
NottinghamDunkirk and Lenton5,005Nottingham West and Beeston1,3853,04055100650004,645
NottinghamLeen Valley7,038Nottingham West and Beeston1,3043,148172108500004,782
NottinghamRadford and Park10,339Nottingham West and Beeston2,7185,9173101771350009,257
NottinghamWollaton East and Lenton Abbey4,488Nottingham West and Beeston1,1552,913205100640004,437
NottinghamWollaton West10,763Nottingham West and Beeston2,8783,169278105730006,503
 Total65,512 14,85230,0121,5651,10259700048,128

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

Old seat: Rushcliffe

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

Old seat: RushcliffeTransfer-adjusted Results
DistrictWardElectorate
2017
New SeatCON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
RushcliffeAbbey4,091Rushcliffe North and Clifton1,4841,387235801370003,323
RushcliffeBunny1,935Loughborough and South Rushcliffe1,0094082645190001,507
RushcliffeCompton Acres3,844Rushcliffe North and Clifton1,7541,20518583520003,279
RushcliffeCotgrave5,397Rushcliffe North and Clifton1,9012,1211211611300004,434
RushcliffeCropwell2,048Rushcliffe North and Clifton9695143726240001,570
RushcliffeEast Bridgford611Newark272119966000412
RushcliffeEdwalton2,973Rushcliffe North and Clifton1,24378314167880002,322
RushcliffeGamston North1,871Rushcliffe North and Clifton8475884946260001,556
RushcliffeGamston South1,859Rushcliffe North and Clifton9126184922230001,624
RushcliffeGotham1,996Loughborough and South Rushcliffe8625173851230001,491
RushcliffeKeyworth and Wolds6,509Loughborough and South Rushcliffe2,7381,5613111661460004,922
RushcliffeLady Bay3,712Rushcliffe North and Clifton1,3501,464194431920003,243
RushcliffeLeake5,704Loughborough and South Rushcliffe2,5111,489106150640004,320
RushcliffeLutterell3,862Rushcliffe North and Clifton1,4651,48424546620003,302
RushcliffeMusters3,400Rushcliffe North and Clifton1,3231,04136136590002,820
RushcliffeNevile and Langar2,186Rushcliffe North and Clifton1,1404563223220001,673
RushcliffeRadcliffe on Trent6,464Rushcliffe North and Clifton2,7861,7761711421660005,041
RushcliffeRuddington5,540Rushcliffe North and Clifton2,1511,8141581401730004,436
RushcliffeSutton Bonington1,474Loughborough and South Rushcliffe73145310946200001,359
RushcliffeThoroton353Newark18366444000261
RushcliffeTollerton1,963Rushcliffe North and Clifton9634202922200001,454
RushcliffeTrent Bridge3,938Rushcliffe North and Clifton1,6291,928149881720003,966
 Total71,730 30,22322,2122,7591,4931,62800058,315

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

New seat: Rushcliffe North and Clifton

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

New seat: Rushcliffe North and Clifton
DistrictWardElectorate
2017
Old Seat CON
Votes
LAB
Votes
LIB
Votes
UKIP
Votes
Green
Votes
NAT
Votes
MIN
Votes
OTH
Votes
Total
Votes
NottinghamClifton North8,495Nottingham South2,1013,307138169290005,744
NottinghamClifton South9,200Nottingham South1,8683,927156192780006,221
RushcliffeAbbey4,260Rushcliffe1,4841,387235801370003,323
RushcliffeCompton Acres4,202Rushcliffe1,7541,20518583520003,279
RushcliffeCotgrave5,684Rushcliffe1,9012,1211211611300004,434
RushcliffeCropwell2,011Rushcliffe9695143726240001,570
RushcliffeEdwalton2,976Rushcliffe1,24378314167880002,322
RushcliffeGamston North1,996Rushcliffe8475884946260001,556
RushcliffeGamston South2,082Rushcliffe9126184922230001,624
RushcliffeLady Bay4,155Rushcliffe1,3501,464194431920003,243
RushcliffeLutterell4,232Rushcliffe1,4651,48424546620003,302
RushcliffeMusters3,614Rushcliffe1,3231,04136136590002,820
RushcliffeNevile and Langar2,143Rushcliffe1,1404563223220001,673
RushcliffeRadcliffe on Trent6,461Rushcliffe2,7861,7761711421660005,041
RushcliffeRuddington5,685Rushcliffe2,1511,8141581401730004,436
RushcliffeTollerton1,865Rushcliffe9634202922200001,454
RushcliffeTrent Bridge5,082Rushcliffe1,6291,928149881720003,966
 Total74,143 25,88624,8332,4501,3861,45300056,008

And these are the implied results for 2017 for the new seat of Rushcliffe North and Clifton. 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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