© Richard Kimber
| Constituency | Vote as % of Votes Cast | Vote as % of Electorate | Winning Vote | Winner |
|---|---|---|---|---|
| Conwy | 30.90 | 11.70 | 6467 | Labour |
| Clwyd West | 34.77 | 14.13 | 7693 | Labour |
| Carmarthen W & Pembrokeshire S | 34.97 | 14.86 | 8384 | Labour |
| Preseli Pembrokeshire | 35.33 | 14.62 | 8067 | Labour |
| Swansea West | 36.18 | 11.95 | 7023 | Labour |
| Clwyd South | 36.51 | 12.75 | 6814 | Labour |
| Ynys Mon | 37.44 | 18.90 | 9452 | Plaid Cymru |
| Cardiff North | 37.55 | 16.14 | 10413 | Labour |
| Wrexham | 37.66 | 12.95 | 6539 | John Marek Ind Party |
| Delyn | 38.62 | 11.98 | 6520 | Labour |
| Montgomeryshire | 40.37 | 17.26 | 7869 | Liberal Democrat |
| Llanelli | 42.80 | 17.27 | 9916 | Labour |
| Bridgend | 42.83 | 15.17 | 9487 | Labour |
| Gower | 43.60 | 17.07 | 10334 | Labour |
| Vale of Glamorgan | 44.05 | 17.79 | 12267 | Labour |
| Newport East | 44.60 | 13.47 | 7621 | Labour |
| Cardiff South & Penarth | 44.62 | 13.71 | 8978 | Labour |
| Ceredigion | 45.15 | 22.45 | 11883 | Plaid Cymru |
| Vale of Clwyd | 46.15 | 16.74 | 8256 | Labour |
| Alyn & Deeside | 46.71 | 11.63 | 7036 | Labour |
| Caerphilly | 46.85 | 17.45 | 11893 | Labour |
| Newport West | 46.92 | 16.42 | 10053 | Labour |
| Swansea East | 47.22 | 14.36 | 8221 | Labour |
| Carmarthen E & Dinefwr | 48.45 | 23.97 | 12969 | Plaid Cymru |
| Brecon & Radnorshire | 49.64 | 24.80 | 13325 | Liberal Democrat |
| Pontypridd | 50.03 | 19.31 | 12206 | Labour |
| Cardiff West | 50.33 | 17.22 | 10420 | Labour |
| Neath | 51.07 | 19.97 | 11332 | Labour |
| Torfaen | 51.92 | 16.57 | 10152 | Labour |
| Cardiff Central | 54.65 | 18.02 | 11256 | Liberal Democrat |
| Islwyn | 54.89 | 21.98 | 11246 | Labour |
| Caernarfon | 54.97 | 24.75 | 11675 | Plaid Cymru |
| Meirionydd Nant Conwy | 57.38 | 25.83 | 8717 | Plaid Cymru |
| Monmouth | 57.52 | 25.60 | 15989 | Conservative |
| Ogmore | 58.94 | 19.92 | 9874 | Labour |
| Aberavon | 59.38 | 22.18 | 11137 | Labour |
| Merthyr Tydfil & Rhymney | 60.51 | 19.99 | 11148 | Labour |
| Rhondda | 61.60 | 28.08 | 14170 | Labour |
| Cynon Valley | 65.04 | 24.38 | 10841 | Labour |
| Blaenau Gwent | 70.22 | 26.23 | 13884 | Labour |
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| Last Modified: 13 Feb 10 © Richard Kimber |