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| Seat | Last Win | 2015 Favourite | Win % |
|---|---|---|---|
| 1. Dwyfor Meirionnydd | PC | PC | 100% |
| 2. Carmarthen East and Dinefwr | PC | PC | 77.8% |
| 3. Arfon | PC | PC | 60% |
| 4. Ceredigion | Liberal Democrats | Liberal Democrats | 40.3% |
| 5. Ynys Môn (Anglesey) | Labour | Labour | 32.5% |
| 6. Llanelli | Labour | Labour | 15% |
| 7. Aberconwy | Conservatives | Conservatives | 4.2% |
| 8. Cynon Valley | Labour | Labour | 3.3% |