General Elections
| Election | Seats | Candidates | First Pref Share | Votes | Constituencies Contested |
| 2024 European Election | 3 | 6 | 20.4% | 356614 | 3/3 |
| 2019 European Election | 2 | 5 | 16.6% | 277705 | 3/3 |
| 2014 European Election | 1 | 5 | 22.3% | 369545 | 3/3 |
| 2009 European Election | 3 | 8 | 24.1% | 440562 | 4/4 |
| 2004 European Election | 4 | 8 | 29.5% | 524504 | 4/4 |
| 1999 European Election | 6 | 8 | 38.6% | 537757 | 4/4 |
| 1994 European Election | 7 | 10 | 35.0% | 398066 | 4/4 |
| 1989 European Election | 6 | 9 | 31.5% | 514537 | 4/4 |
| 1984 European Election | 8 | 10 | 39.2% | 438946 | 4/4 |
| 1979 European Election | 5 | 15 | 34.7% | 464451 | 4/4 |