Notional results for a UK general election on 5 May 2005 Yorkshire and The Humber, England - Elections contested by UK Independence Party
| Constituency | Electorate | Turnout | Votes | Vote share | Position |
| Beverley and Holderness | 77,424 | 64.2% | 2,312 | 4.7% | 4th |
| Bradford South | 65,884 | 53.4% | 552 | 1.6% | 6th |
| Brigg and Goole | 65,365 | 62.7% | 1,226 | 3.0% | 4th |
| Cleethorpes | 70,746 | 61.6% | 2,016 | 4.6% | 4th |
| Doncaster Central | 72,587 | 52.0% | 1,290 | 3.4% | 4th |
| Doncaster North | 71,750 | 52.6% | 841 | 2.2% | 6th |
| East Yorkshire | 77,121 | 61.2% | 1,721 | 3.6% | 4th |
| Great Grimsby | 63,711 | 51.7% | 1,239 | 3.8% | 5th |
| Haltemprice and Howden | 68,533 | 70.4% | 665 | 1.4% | 5th |
| Harrogate and Knaresborough | 73,815 | 66.7% | 845 | 1.7% | 4th |
| Leeds Central | 76,713 | 44.3% | 491 | 1.4% | 5th |
| Leeds West | 66,849 | 52.8% | 643 | 1.8% | 6th |
| Penistone and Stocksbridge | 67,969 | 62.1% | 696 | 1.7% | 5th |
| Pudsey | 67,196 | 65.9% | 1,229 | 2.8% | 4th |
| Rotherham | 62,002 | 54.1% | 1,318 | 3.9% | 5th |
| Rother Valley | 70,370 | 57.7% | 1,728 | 4.3% | 5th |
| Scarborough and Whitby | 73,806 | 63.6% | 952 | 2.0% | 5th |
| Scunthorpe | 62,875 | 54.4% | 1,403 | 4.1% | 4th |
| Sheffield, Brightside and Hillsborough | 66,476 | 50.0% | 992 | 3.0% | 5th |
| Sheffield Central | 60,400 | 55.0% | 554 | 1.7% | 6th |
| Sheffield, Hallam | 67,522 | 67.9% | 621 | 1.4% | 5th |
| Sheffield, Heeley | 65,461 | 57.7% | 891 | 2.4% | 6th |
| Sheffield South East | 66,798 | 54.7% | 1,606 | 4.4% | 4th |
| Skipton and Ripon | 74,834 | 66.1% | 2,274 | 4.6% | 4th |
| Thirsk and Malton | 75,220 | 65.9% | 1,522 | 3.1% | 4th |
| Wakefield | 68,333 | 61.4% | 467 | 1.1% | 7th |
| Wentworth and Dearne | 70,879 | 54.4% | 1,365 | 3.5% | 5th |
| York Central | 65,817 | 60.6% | 832 | 2.1% | 5th |
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.
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
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.