Northern Ireland, 1966 vs 1970: seat-by-seat change
Every constituency in Northern Ireland compared between the 1966 and 1970 general elections: which seats changed hands and how far each swung.
| Constituency | 1966 | 1970 | Majority | Con–Lab swing |
|---|---|---|---|---|
| Antrim North | Con | Oth gain | 11.9% | +26.3 |
| Antrim South | Con | Con | 40.7% | −6.0 |
| Armagh | Con | Con | 23.4% | +14.8 |
| Belfast East | Con | Con | 18.9% | −4.8 |
| Belfast North | Con | Con | 16.5% | −0.8 |
| Belfast South | Con | Con | 40.8% | −5.1 |
| Belfast West | Oth | Oth | 5.5% | +0.4 |
| Down North | Con | Con | 51.3% | +13.6 |
| Down South | Con | Con | 20.6% | +4.9 |
| Fermanagh and South Tyrone | Con | Oth gain | 2.2% | +2.6 |
| Londonderry County | Con | Con | 6.2% | +2.5 |
| Ulster Mid | Con | Oth gain | 9.8% | +3.6 |
Official results House of Commons Library and UK Parliament election results data. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. How we use this data