Notional results for a UK general election on 5 May 2005 South West, England - by turnout
| Ranking | Constituency | Winning party | Valid vote count | Electorate | Turnout (valid vote count / electorate) |
| 1 | West Dorset | Con | 53,225 | 69,643 | 76.4% |
| 2 | Thornbury and Yate | LD | 47,160 | 64,045 | 73.6% |
| 3 | Mid Dorset and North Poole | LD | 45,220 | 62,730 | 72.1% |
| 4 | North Somerset | Con | 51,736 | 72,098 | 71.8% |
| 5 | North East Somerset | Con | 46,416 | 64,934 | 71.5% |
| 6 | Torridge and West Devon | Con | 50,906 | 71,448 | 71.2% |
| 7 | Forest of Dean | Con | 47,640 | 67,241 | 70.8% |
| 8 | Tiverton and Honiton | Con | 51,332 | 72,888 | 70.4% |
| 9 | Christchurch | Con | 46,807 | 66,535 | 70.3% |
| 10 | Stroud | Lab | 53,775 | 76,677 | 70.1% |
| 11 | Central Devon | Con | 46,880 | 67,121 | 69.8% |
| 12 | Totnes | Con | 46,735 | 67,039 | 69.7% |
| 13 | North Wiltshire | Con | 44,897 | 64,580 | 69.5% |
| 14 | South Dorset | Lab | 48,584 | 70,002 | 69.4% |
| 15 | North Dorset | Con | 48,956 | 70,632 | 69.3% |
| 16 | Taunton Deane | LD | 56,649 | 81,767 | 69.3% |
| 17 | Somerton and Frome | LD | 53,350 | 77,035 | 69.3% |
| 18 | Kingswood | Lab | 44,647 | 64,530 | 69.2% |
| 19 | Bath | LD | 41,466 | 60,023 | 69.1% |
| 20 | Newton Abbot | LD | 46,012 | 66,766 | 68.9% |
| 21 | Bristol North West | Lab | 48,851 | 71,024 | 68.8% |
| 22 | Salisbury | Con | 45,444 | 66,311 | 68.5% |
| 23 | North Devon | LD | 49,268 | 72,171 | 68.3% |
| 24 | South West Devon | Con | 46,931 | 68,789 | 68.2% |
| 25 | East Devon | Con | 47,672 | 70,105 | 68.0% |
| 26 | St Ives | LD | 43,691 | 64,459 | 67.8% |
| 27 | Wells | Con | 52,965 | 78,234 | 67.7% |
| 28 | South East Cornwall | LD | 46,586 | 68,856 | 67.7% |
| 29 | The Cotswolds | Con | 50,451 | 75,035 | 67.2% |
| 30 | Chippenham | LD | 46,445 | 69,443 | 66.9% |
| 31 | Weston-Super-Mare | Con | 48,977 | 74,571 | 65.7% |
| 32 | Devizes | Con | 42,813 | 65,563 | 65.3% |
| 33 | Truro and Falmouth | LD | 42,480 | 65,288 | 65.1% |
| 34 | St Austell and Newquay | LD | 46,001 | 70,872 | 64.9% |
| 35 | South West Wiltshire | Con | 45,454 | 70,349 | 64.6% |
| 36 | North Cornwall | LD | 42,098 | 65,257 | 64.5% |
| 37 | Exeter | Lab | 49,574 | 77,049 | 64.3% |
| 38 | Bridgwater and West Somerset | Con | 50,988 | 79,643 | 64.0% |
| 39 | Poole | Con | 42,144 | 65,891 | 64.0% |
| 40 | Yeovil | LD | 50,665 | 79,306 | 63.9% |
| 41 | Bristol West | LD | 45,056 | 70,819 | 63.6% |
| 42 | Camborne and Redruth | LD | 38,577 | 61,035 | 63.2% |
| 43 | Bristol East | Lab | 42,266 | 67,036 | 63.0% |
| 44 | Gloucester | Lab | 46,821 | 74,918 | 62.5% |
| 45 | Cheltenham | LD | 47,904 | 76,704 | 62.5% |
| 46 | Filton and Bradley Stoke | Con | 41,243 | 66,042 | 62.4% |
| 47 | Tewkesbury | Con | 46,152 | 74,165 | 62.2% |
| 48 | North Swindon | Lab | 42,811 | 70,415 | 60.8% |
| 49 | Torbay | LD | 45,348 | 75,272 | 60.2% |
| 50 | Bristol South | Lab | 43,967 | 74,520 | 59.0% |
| 51 | South Swindon | Lab | 42,626 | 72,284 | 59.0% |
| 52 | Bournemouth East | Con | 41,835 | 70,952 | 59.0% |
| 53 | Plymouth, Moor View | Lab | 39,960 | 68,574 | 58.3% |
| 54 | Plymouth, Sutton and Devonport | Lab | 40,245 | 72,505 | 55.5% |
| 55 | Bournemouth West | Con | 36,613 | 67,955 | 53.9% |
Estimates of the 2005 general election result in new constituencies
Professors Colin Rallings and Michael Thrasher, at The Elections Centre of the University of Exeter, 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.