| Simulation of proposed AV system in UK applied to 2010 election results | First-choice votes polled by candidate who won under AV (percentage of total constituency votes) | Second- or third-choice votes from those initially choosing other parties, re-assigned under AV | Total votes picked up by the candidate winning under AV | Votes from those whose first choice was not the winning candidate and whose second- or third-choice vote was discarded under AV | ||||||
| Welsh | Winning Candidate (Elected as MP) | Winning Party | ||||||||
| Constituencies / Seats in UK Parliament | ||||||||||
| From: To: | ||||||||||
| Pontypridd | AV changes underlined | |||||||||
| Ynys Mon | Number | % | Number | % | Number | % | Number | % | ||
| Pontypridd | Smith, Owen | Labour | 14,220 | 38.8% | 1,886 | 5.1% | 16,106 | 43.9% | 20,565 | 56.1% |
| Preseli Pembrokeshire | Crabb, Stephen | Conservative | 16,944 | 42.8% | 1,079 | 2.7% | 18,023 | 45.5% | 21,579 | 54.5% |
| Rhondda | Bryant, Chris | Labour | 17,183 | 55.3% | 0 | 0.0% | 17,183 | 55.3% | 13,889 | 44.7% |
| Swansea East | James, Sian | Labour | 16,819 | 51.5% | 0 | 0.0% | 16,819 | 51.5% | 15,857 | 48.5% |
| Swansea West | May, Peter | Lib-Dem | 11,831 | 33.2% | 3,090 | 8.7% | 14,921 | 41.9% | 20,672 | 58.1% |
| Torfaen | Murphy, Paul | Labour | 16,847 | 44.8% | 1,872 | 5.0% | 18,719 | 49.7% | 18,921 | 50.3% |
| Vale of Clwyd | Ruane, Chris | Labour | 15,017 | 42.3% | 2,214 | 6.2% | 17,231 | 48.5% | 18,303 | 51.5% |
| Vale of Glamorgan | Cairns, Alun | Conservative | 20,341 | 41.8% | 1,408 | 2.9% | 21,749 | 44.7% | 26,918 | 55.3% |
| Wrexham | Lucas, Ian | Labour | 12,161 | 36.9% | 1,434 | 4.3% | 13,595 | 41.2% | 19,381 | 58.8% |
| Ynys Mon | Owen, Albert | Labour | 11,490 | 33.4% | 1,942 | 5.6% | 13,432 | 39.0% | 21,012 | 61.0% |
| SUMMARY - WALES | Alternative Vote (AV) results for all Welsh seats if applied to 2010 Election votes | Total votes cast in Wales | Total first-choice winning votes, all Welsh seats | Total second- or third-choice votes re-assigned under AV in Wales | Total votes picked up by winning candidates under AV in Wales | Total votes discarded under AV, all Welsh seats | ||||
| 1,466,991 | 622,661 | 65,973 | 688,634 | 778,357 | ||||||
| 100.0% | 42.4% | 4.5% | 46.9% | 53.1% | ||||||
| Results based on simulation program AVOTER (AV Operational Testing, Evaluation and Research) | ||||||||||