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Data Provider: Welsh Government National Statistics Electoral roll: Electors by Senedd Cymru constituency and year
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[Collapse]AreaNational Assembly for Wales consituency areas and electoral regions [Filter]
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Click here to sort1 December 2010Click here to sort1 December 2011Click here to sort16 October 2012Due to the Police and Crime Commissioners (PCC) elections for England and Wales held in November 2012, the annual voter canvass for 2012 was conducted early and new electoral registers published on 16 October 2012, rather than 1 December 2012. This change was to ensure that the electoral register was as complete and accurate as possible prior to the elections.Click here to sort10 March 2014To make sure that the electoral register was as complete and accurate as possible ahead of the introduction of Individual Electoral Registration (IER) in summer 2014, the annual publication of electoral registers in Great Britain, normally due on 1 December 2013, was delayed until spring 2014. Electoral registers were published on 10 March 2014 in Wales.Click here to sort1 December 2014The number of attainers (those who will turn 18 during the currency of the register), have seen a decrease in the 2014 electorate as a whole,  24.4% in Wales. This is believed to be due to:-<br />1) Approximately 90% of voters were automatically transferred onto the system with no further action required. However, those not automatically transferred needed to be followed up and in many areas this process was not completed prior to the publication of the register on 1 December 2014. <br />2) The attainer numbers are down because the transition to IER meant the usual household canvass was not conducted and therefore fewer new attainers have been identified.Click here to sort1 December 2015Click here to sort1 December 2016Revisions to the 2016 and 2017 data were made in April 2019 as data previously showed parliamentary electors. The data now shows local government electors to be consistent with previous years.Click here to sort1 December 2017Revisions to the 2016 and 2017 data were made in April 2019 as data previously showed parliamentary electors. The data now shows local government electors to be consistent with previous years.Click here to sort1 December 2018Click here to sort1 December 2019Click here to sort2 March 2020Electoral registers collected as at 2 March 2020 have been produced to support the Parliamentary Constituency Boundary review due to finish in July 2023.
[Collapse]Wales2,302,3002,322,1242,328,3352,328,4992,254,2192,207,9802,270,4412,291,2802,264,7192,349,4342,358,070
Wales[Collapse]North Wales476,624480,481483,444482,306471,891465,583472,582476,357471,982482,321483,739
North Wales[Collapse]Ynys MônW0900000149,72150,62951,05550,24748,22049,47150,85551,54750,55150,73452,610
[Collapse]ArfonW0900000241,13840,66741,16540,30038,38738,08339,45640,54339,34943,12843,125
[Collapse]AberconwyW0900000345,40745,78346,10146,37345,79944,71844,49045,10244,44445,49245,426
[Collapse]Clwyd WestW0900000458,54459,07359,34259,57158,75457,21356,82157,36256,84558,12158,024
[Collapse]Vale of ClwydW0900000556,58556,74957,09557,25356,50156,25356,45656,06155,92556,38156,307
[Collapse]DelynW0900000654,40554,79954,99154,72053,71953,07053,06754,58954,26255,64355,604
[Collapse]Alyn and DeesideW0900000762,19663,15663,43163,44962,38661,94661,94464,24163,91465,21365,183
[Collapse]WrexhamW0900000853,73354,20654,43054,38552,91151,07153,80052,38052,40452,77552,713
[Collapse]Clwyd SouthW0900000954,89555,41955,83456,00855,21453,75855,69354,53254,28854,83454,747
[Collapse]Mid and West Wales435,900441,208441,876438,853423,357416,897431,781430,375426,637444,983446,524
Mid and West Wales[Collapse]Dwyfor MeirionnyddW0900001045,00644,26044,85043,86243,26842,57243,54343,99943,32145,04544,882
[Collapse]MontgomeryshireW0900001148,91049,10649,18849,26348,13547,46450,48048,12847,69249,80549,691
[Collapse]CeredigionW0900001256,94259,35658,32057,55650,26051,11952,59953,16551,99954,44056,634
[Collapse]Brecon and RadnorshireThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004153,88254,09954,33054,56853,66952,52355,72653,51753,04555,24455,124
[Collapse]Preseli PembrokeshireW0900001458,34358,51958,33857,22055,80054,93756,34856,98656,97860,05960,025
[Collapse]Carmarthen East and DinefwrW0900001554,55755,50856,08556,15955,58954,37956,02056,40656,22158,10058,048
[Collapse]Carmarthen West and South PembrokeshireW0900001658,99459,57759,76659,06456,85155,55656,82157,46956,98459,96659,924
[Collapse]LlanelliW0900001759,26660,78360,99961,16159,78558,34760,24460,70560,39762,32462,196
[Collapse]South Wales West410,407411,044409,776409,728395,019386,978395,920403,995396,791406,118413,569
South Wales West[Collapse]GowerW0900001862,38962,69663,35162,87561,40359,82060,96561,81160,52661,80262,763
[Collapse]Swansea WestW0900001962,76961,68159,49361,57356,09852,98554,40557,40054,86857,34259,419
[Collapse]Swansea EastW0900002060,80961,18960,74260,60357,42456,26457,93059,18157,81359,35160,726
[Collapse]NeathW0900002157,82358,08158,16157,75455,82454,92055,90855,76255,73456,84557,032
[Collapse]AberavonW0900002251,23351,47751,67251,19249,67648,60549,72449,96749,99551,30451,450
[Collapse]BridgendW0900002359,53359,93260,53760,08859,90559,58461,18562,78561,63762,50264,245
[Collapse]OgmoreThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004555,85155,98855,82055,64354,68954,80055,80357,08956,21856,97257,934
[Collapse]South Wales Central507,983516,319521,412520,446496,249481,345498,768502,118496,307532,326523,096
South Wales Central[Collapse]RhonddaW0900002552,86253,16953,24152,26051,79249,30049,39349,47549,02050,76950,471
[Collapse]Cynon ValleyW0900002652,37252,67152,85551,77051,30949,64350,16050,52450,14651,73351,461
[Collapse]PontypriddThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004660,27561,26961,75259,60658,15056,80759,36059,12958,60061,25160,923
[Collapse]Vale of GlamorganThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004771,58572,60573,29671,91371,19270,02972,30673,70574,01577,38777,204
[Collapse]Cardiff WestW0900002964,29566,12767,37769,10066,97165,11066,58766,82966,32070,83969,511
[Collapse]Cardiff NorthThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004267,19468,20069,16669,91266,50764,37666,61066,71665,85969,95369,143
[Collapse]Cardiff CentralW0900003164,22565,56365,20865,88353,69151,36357,23857,65955,42467,60663,017
[Collapse]Cardiff South and PenarthThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004375,17576,71578,51780,00276,63774,71777,11478,08176,92382,78881,366
[Collapse]South Wales East471,386473,072471,827477,166467,703457,177471,390478,435473,002483,686491,142
South Wales East[Collapse]Merthyr Tydfil and RhymneyThe data for this area does not take account of the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011, in which very minor changes were made to the constituency boundary.  The changes in the numbers of electors as a result of these boundary changes are sufficiently minor to be treated as negligible for the purposes of any analysis.W0900004455,40955,21455,86156,73655,35354,22355,73156,29454,88956,35657,883
[Collapse]MonmouthW0900003465,43265,76666,42266,60065,18763,10664,40364,88265,07667,11167,252
[Collapse]CaerphillyW0900003561,87662,63961,98363,96062,80261,49063,26663,21663,18464,93064,926
[Collapse]IslwynW0900003654,79255,37255,29956,24355,08453,54455,34855,35855,43256,80856,841
[Collapse]TorfaenW0900003761,80661,45361,29061,22561,34158,75260,61361,45061,36561,76163,061
[Collapse]Blaenau GwentW0900003853,79154,07953,70753,47651,36250,00850,46650,96750,56750,32051,495
[Collapse]Newport WestW0900003963,05663,24462,12562,59261,04861,07064,38067,21364,77866,95168,748
[Collapse]Newport EastW0900004055,22455,30555,14056,33455,52654,98457,18359,05557,71159,44960,936

Metadata

General description

This dataset shows the number of people who were registered on the electoral roll on the date shown to vote at a Senedd Cymru election, and the number of attainers (a person who attains the age of 18 during the currency of the register, and is entitled to vote at a Senedd election on or after his or her eighteenth birthday).

To make sure that the electoral register was as complete and accurate as possible ahead of the introduction of Individual Electoral Registration (IER) in summer 2014, the annual publication of electoral registers in Great Britain, normally due on 1 December 2013, was delayed until spring 2014. Electoral registers were published on 10 March 2014 in Wales.

The data are based on the Senedd constituency boundaries which came into effect at the elections on 3 May 2007 with subsequent changes as a result of local government boundary changes in seven areas under the Parliamentary Constituencies and Assembly Regions (Wales) (Amendment) Order 2011. The Order did not make the same changes to the boundaries of the Westminster parliamentary constituencies and came into effect on 14 December 2011 so from this point onwards there are some differences between the Westminster parliamentary constituencies and the Senedd constituencies. This also means that for some constituencies, the data for 2012 onwards is not consistent with data for previous years. These areas are marked in the data.

Note that entitlement to vote is different for Senedd and Westminster parliamentary elections. EU citizens resident in Wales are entitled to vote at Senedd (and local government elections) but not at Westminster Parliamentary elections.

This material is Crown Copyright and may be re-used (not including logos) free of charge in any format or medium, under the terms of the Open Government Licence.


Data collection and calculation

Data are collected by local authorities as part of an annual voter canvas. The results are then collated and published by constituency area by the Office for National Statistics.

Frequency of publication

Annual

Data reference periods

Data are produced and reported annually and relate to the 1 December each year.

In 2012, the annual voter canvass was conducted early and the publication of the electoral roll brought forward to 16 October to allow for the Police and Crime Commissioners (PCC) elections for England and Wales held in November 2012.

To make sure that the electoral register was as complete and accurate as possible ahead of the introduction of Individual Electoral Registration (IER) in summer 2014, the annual publication of electoral registers in Great Britain, normally due on 1 December 2013, was delayed until spring 2014. Electoral registers were published on 10 March 2014 in Wales.

Electoral registers collected as at 2 March 2020 have been produced to support the Parliamentary Constituency Boundary review due to finish in July 2023.

Users, uses and context

The data are used to estimate the electoral size of each of the Senedd Cymru constituencies and to support any research that may be conducted ahead of relevant elections.

The principal users of these data will be the Members’ Research Service of the Senedd Cymru (in supporting all constituency and regional Members of the Senedd or MS); individual MS and their researchers; Welsh Ministers and their private office staff; the media; press and policy officials in the Welsh Government; students, academics and universities; and citizens, private companies, and other interested individuals.

Rounding applied

No rounding is applied to the data.

Revisions information

Revisions to the 2016 and 2017 data were made in April 2019 as data previously showed UK Parliamentary electors. The data now shows local government electors to be consistent with previous years.

Title

Electoral registers by Senedd Cymru constituency areas and electoral regions

Last update

January 2021 January 2021

Next update

Summer 2021

Publishing organisation

Welsh Government

Source 1

UK Electoral Statistics, Office for National Statistics

Contact email

stats.popcensus@gov.wales

Designation

National Statistics

Lowest level of geographical disaggregation

National Assembly for Wales constituencies

Geographical coverage

Wales

Languages covered

English and Welsh

Data licensing

You may use and re-use this data free of charge in any format or medium, under the terms of the Open Government License - see http://www.nationalarchives.gov.uk/doc/open-government-licence

Statistical quality

See weblinks

Keywords

Electoral rolls; electoral register wales; voters; Electoral registered Statistics; Senedd Cymru elections;