Redcar: New Boundaries Calculation

This page shows the detail of the calculations performed to estimate the general election result for 2005 had the new boundaries for Redcar 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 2005. 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.

Due to changes in ward boundaries, some new wards are divided among several old constituencies (though never between two new constituencies). Such wards are shown divided into several parts, called [1], [2], and so on.

Election results from a recent local election are given. This is usually the local election from 2003, 2004 or 2006. 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. Where zero votes are shown, the ward is not needed because the entire old seat is unsplit.

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% of its votes from each ward. 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 on a ward-by-ward basis using these common percentages.

More details of the calculation formulas are available.

The old seat(s) needed are:

Old seat: Middlesbrough South and Cleveland East

The main table shows the district council election results for all the wards in the old seat of Middlesbrough South and Cleveland East. The first block shows the actual results, the second block shows the turnout-adjusted results, and the third block has the transfer-adjusted results. Details of the transfer calculation are given below this table.

 Actual ResultsTurnout-adjusted Results Transfer-adjusted Results
DistrictWardElectorate
2005
Old SeatNew Seat CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
Total
Votes
CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
Total
Votes
MiddlesbroughBeechwood [2]650Middlesbrough South and Cleveland EastMiddlesbrough72781071018198018039655283056396
MiddlesbroughBrookfield [2]74Middlesbrough South and Cleveland EastMiddlesbrough1,1741,35402671922044519230145
MiddlesbroughCoulby Newham6,525Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East3372,21430304693,07842103,9685143,18326903,968
MiddlesbroughHemlington4,413Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East073475527601,1161,1484202,6842111,6037361322,684
MiddlesbroughKader [2]104Middlesbrough South and Cleveland EastMiddlesbrough1,65390322403821506438223064
MiddlesbroughLadgate4,363Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East2841,231004972,156002,6534972,156002,653
MiddlesbroughMarton3,877Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East01681,873001942,16402,3582347351,38702,358
MiddlesbroughMarton West4,217Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East1,47841053801,56243356902,5641,62357536402,564
MiddlesbroughNunthorpe3,912Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East1,92919299801,47114676102,3781,55333648802,378
MiddlesbroughPark End [2]3,740Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East0940043401,55607182,2741481,89802262,274
MiddlesbroughStainton and Thornton2,328Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East091635001771,23801,41513448679301,415
Redcar and ClevelandBrotton5,300Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East4972,9702,87202531,5101,46003,2234111,87593603,223
Redcar and ClevelandGuisborough5,929Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East4,0213,73033701,7921,66315003,6051,8081,7009603,605
Redcar and ClevelandHutton6,033Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East5,3591,2182,40502,18949798203,6682,29574262903,668
Redcar and ClevelandLockwood1,629Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East000-10009919912054730312991
Redcar and ClevelandLoftus5,229Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East2822,08204,66712894202,1113,1815651,95006653,181
Redcar and ClevelandSaltburn [1]4,735Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East3,7251,8871,27701,55778953402,8801,61492234202,880
Redcar and ClevelandSkelton5,125Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East3,2424,570001,2931,823003,1161,2931,823003,116
Redcar and ClevelandSt Germain's [1]0Middlesbrough South and Cleveland EastRedcar9158074,9421,5610000000000
Redcar and ClevelandWestworth3,675Middlesbrough South and Cleveland EastMiddlesbrough South and Cleveland East75695201,81947960301,1532,2357181,15303632,235
 Total Middlesbrough South and Cleveland East     11,76516,9249,4325,57743,69813,94521,9466,0491,75743,698

The transfer table below shows the votes cast in the old seat of Middlesbrough South and Cleveland East at the general election, as well as the total local turnout-adjusted votes. The number of votes to transfer, shown in the fourth and fifth columns, are the difference between the general and local votes. Strong parties will have votes transferred away, and weak parties will have votes transferred into them. The final column describes how votes will be transferred away from or into that party on a ward-by-ward basis. If a party is too strong, it will lose a percentage of its votes in each ward which go into that ward's transfer pool. If a party is too weak, it will gain votes from each ward's transfer pool in proportion to the number of transfer votes it needs over the whole old seat.

PartyGeneral
Election 2005
Votes
Local Election
Turnout-adjusted
Votes
Votes to
transfer
away
Votes to
transfer
into
Ward Transfers needed
CON13,94511,76502,180Transfer in 30.3% (= 2180 / 7201) of ward's transfer pool votes
LAB21,94516,92405,021Transfer in 69.7% (= 5021 / 7201) of ward's transfer pool votes
LIB6,0499,4323,3830Transfer away 35.9% (= 3383 / 9432) of ward's LIB votes
OTH1,7575,5773,8200Transfer away 68.5% (= 3820 / 5577) of ward's OTH votes
Total43,69643,6987,2017,201 

After transfer adjustment, the totals for each party over all the wards match the general election vote in the old seat.

Old seat: Redcar

The main table shows the district council election results for all the wards in the old seat of Redcar. The first block shows the actual results, the second block shows the turnout-adjusted results, and the third block has the transfer-adjusted results. Details of the transfer calculation are given below this table.

 Actual ResultsTurnout-adjusted Results Transfer-adjusted Results
DistrictWardElectorate
2005
Old SeatNew Seat CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
Total
Votes
CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
Total
Votes
Redcar and ClevelandCoatham3,741RedcarRedcar3789611,4584922496349623252,1702301,0375713302,170
Redcar and ClevelandDormanstown5,290RedcarRedcar4143,5192,3547931791,5251,0203443,0681651,9466053493,068
Redcar and ClevelandEston5,582RedcarRedcar3092,85104,5301301,20001,9073,2371201,20901,9073,237
Redcar and ClevelandGrangetown3,231RedcarRedcar621,7846490471,34048701,874431,53828921,874
Redcar and ClevelandKirkleatham4,912RedcarRedcar1,4483,6111,90405921,47777902,8485471,83346242,848
Redcar and ClevelandLongbeck5,250RedcarRedcar2,7445747951,1891,5763304576833,0461,4576302716873,046
Redcar and ClevelandNewcomen3,404RedcarRedcar3204182,72401822381,55301,97316887392281,973
Redcar and ClevelandNormanby5,608RedcarRedcar2,3684,33293401,0091,84639803,2539322,08023633,253
Redcar and ClevelandOrmesby4,896RedcarRedcar4595775,59001972472,39602,8401821,2211,422132,840
Redcar and ClevelandSaltburn [2]0RedcarMiddlesbrough South and Cleveland East3,7251,8871,27700000000000
Redcar and ClevelandSouth Bank5,130RedcarRedcar3744,23792802012,27649802,9751852,49029532,975
Redcar and ClevelandSt Germain's [2]5,104RedcarRedcar9158074,9421,5613292901,7795622,9603041,0271,0565722,960
Redcar and ClevelandTeesville5,286RedcarRedcar2,5624,2396624769891,6372561843,0669141,8131511863,066
Redcar and ClevelandWest Dyke5,894RedcarRedcar2,0676285,00309182792,22203,4198481,2371,319133,419
Redcar and ClevelandZetland3,676RedcarRedcar1,6851,444762092379141802,1328531,02724832,132
 Total Redcar     7,52114,11013,2254,00538,8616,95319,9687,8524,08738,861

The transfer table below shows the votes cast in the old seat of Redcar at the general election, as well as the total local turnout-adjusted votes. The number of votes to transfer, shown in the fourth and fifth columns, are the difference between the general and local votes. Strong parties will have votes transferred away, and weak parties will have votes transferred into them. The final column describes how votes will be transferred away from or into that party on a ward-by-ward basis. If a party is too strong, it will lose a percentage of its votes in each ward which go into that ward's transfer pool. If a party is too weak, it will gain votes from each ward's transfer pool in proportion to the number of transfer votes it needs over the whole old seat.

PartyGeneral
Election 2005
Votes
Local Election
Turnout-adjusted
Votes
Votes to
transfer
away
Votes to
transfer
into
Ward Transfers needed
CON6,9547,5215670Transfer away 7.5% (= 567 / 7521) of ward's CON votes
LAB19,96814,11005,858Transfer in 98.6% (= 5858 / 5940) of ward's transfer pool votes
LIB7,85213,2255,3730Transfer away 40.6% (= 5373 / 13225) of ward's LIB votes
OTH4,0874,005082Transfer in 1.4% (= 82 / 5940) of ward's transfer pool votes
Total38,86138,8615,9405,940 

After transfer adjustment, the totals for each party over all the wards match the general election vote in the old seat.

New seat: Redcar

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

DistrictWardElectorate
2005
Old SeatNew Seat CON
Votes
LAB
Votes
LIB
Votes
OTH
Votes
Total
Votes
Redcar and ClevelandCoatham3,741RedcarRedcar2301,0375713302,170
Redcar and ClevelandDormanstown5,290RedcarRedcar1651,9466053493,068
Redcar and ClevelandEston5,582RedcarRedcar1201,20901,9073,237
Redcar and ClevelandGrangetown3,231RedcarRedcar431,53828921,874
Redcar and ClevelandKirkleatham4,912RedcarRedcar5471,83346242,848
Redcar and ClevelandLongbeck5,250RedcarRedcar1,4576302716873,046
Redcar and ClevelandNewcomen3,404RedcarRedcar16887392281,973
Redcar and ClevelandNormanby5,608RedcarRedcar9322,08023633,253
Redcar and ClevelandOrmesby4,896RedcarRedcar1821,2211,422132,840
Redcar and ClevelandSouth Bank5,130RedcarRedcar1852,49029532,975
Redcar and ClevelandSt Germain's [1]0Middlesbrough South and Cleveland EastRedcar00000
Redcar and ClevelandSt Germain's [2]5,104RedcarRedcar3041,0271,0565722,960
Redcar and ClevelandTeesville5,286RedcarRedcar9141,8131511863,066
Redcar and ClevelandWest Dyke5,894RedcarRedcar8481,2371,319133,419
Redcar and ClevelandZetland3,676RedcarRedcar8531,02724832,132
 Total  Redcar6,95319,9687,8524,08738,861

And these are the implied results for 2005 for the new seat of Redcar.