The table belows shows swings to the UK Labour Party greater than 10% since 1945.
| POST WAR BYELECTION SWINGS TO LABOUR GREATER THAN 10% | ||
|---|---|---|
| Date | Constituency | Swing % |
| 15/12/94 | Dudley West | -29.12 |
| 9/6/94 | Dagenham | -23.06 |
| 9/6/94 | Barking | -21.96 |
| 22/3/90 | Mid Staffordshire | -21.33 |
| 9/6/94 | Eastleigh | -16.68 |
| 17/6/71 | Hayes and Harlington | -16.54 |
| 9/6/94 | Newham North East | -16.30 |
| 8/11/90 | Bradford North | -15.78 |
| 4/7/85 | Brecon and Radnor | -14.93 |
| 9/6/94 | Bradford South | -14.12 |
| 12/2/58 | Rochdale | -13.96 |
| 15/8/63 | Stratford | -13.74 |
| 4/5/61 | Bristol South East | -13.23 |
| 13/3/80 | Southend East | -12.87 |
| 6/6/62 | Middlesbrough West | -12.70 |
| 16/5/91 | Monmouth | -12.59 |
| 6/5/93 | Newbury | -12.53 |
| 11/6/64 | Liverpool Scotland | -12.50 |
| 4/5/89 | Vale of Glamorgan | -12.35 |
| 7/3/57 | Warwick and Leamington | -12.22 |
| 13/3/62 | Blackpool North | -12.21 |
| 23/9/71 | Widnes | -11.46 |
| 14/3/62 | Middlesbrough East | -11.37 |
| 29/7/93 | Christchurch | -11.37 |
| 8/11/90 | Bootle | -11.18 |
| 13/4/72 | Merthyr Tydfil | -11.15 |
| 4/5/72 | Southwark | -11.05 |
| 15/12/88 | Epping Forest | -10.93 |
| 10/4/86 | Fulham | -10.80 |
| 17/4/62 | Derby North | -10.68 |
| 12/9/57 | Gloucester | -10.48 |
| 15/11/45 | Bournemouth | -10.29 |
| 4/7/63 | West Bromwich | -10.15 |
| 27/5/71 | Bromsgrove | -10.08 |
