| elección | 2019 | 2015 | 2011 | 2007 | 203 | 1999 | 1995 | 1991 | 1987 | 1983 | 1979 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| IU_Podemos | 6.570 | 5.582 | 2.759 | 3.465 | 6.401 | 4.053 | 6.990 | 1.992 | 807 | 2.246 | 3.927 |
| PNV | 19.400 | 12.542 | 11.283 | 9.785 | 15.474 | 11.286 | 11.619 | 12.875 | 11.895 | 18.005 | 14.445 |
| PP | 2.314 | 4.274 | 7.908 | 7.714 | 11.108 | 10.331 | 8.537 | 3.851 | 4.521 | ||
| PSE | 13.623 | 12.490 | 13.168 | 19.296 | 17.448 | 16.653 | 15.190 | 14.756 | 15.351 | 21.305 | 11.726 |
| EHBildu | 5.379 | 6.613 | 6.959 | 4.936 | 6.389 | 4.680 | 6.332 | 9.232 | 6.340 | 13.189 |
