Notional results for a UK general election on 5 May 2005 North West, England - Elections won by Conservative
| Constituency | Electorate | Turnout | Votes | Vote share | Majority |
| Altrincham and Sale West | 63,969 | 67.8% | 20,384 | 47.0% | 7,618 |
| Congleton | 72,771 | 64.1% | 21,189 | 45.4% | 8,246 |
| Eddisbury | 66,356 | 65.1% | 20,272 | 46.9% | 6,408 |
| Fylde | 65,373 | 59.3% | 21,053 | 54.3% | 11,117 |
| Macclesfield | 73,280 | 62.5% | 22,735 | 49.6% | 9,464 |
| Penrith and The Border | 63,274 | 66.7% | 21,689 | 51.4% | 10,795 |
| Ribble Valley | 74,896 | 61.5% | 20,693 | 44.9% | 6,953 |
| Tatton | 65,097 | 63.9% | 21,415 | 51.5% | 11,537 |
| Wirral West | 55,184 | 68.1% | 15,705 | 41.8% | 569 |
| Wyre and Preston North | 69,408 | 63.3% | 24,011 | 54.7% | 12,082 |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
Estimates of the 2005 general election result in new constituencies
Colin Rallings and Michael Thrasher, then at the University of Plymouth, produced estimates of the 2005 general election result as if the new constituencies recommended by the separate Parliamentary Boundary Commissions for England, Wales and Northern Ireland had then been in existence.
The Elections Centre, established by Professors Colin Rallings and Michael Thrasher, moved to the University of Exeter in 2003.