| Election For | Date | Votes | Registered Voters | Turnout |
|---|---|---|---|---|
| Basque Parliament | 2020-07-12 | 911,089 | 1,794,316 | 50.78 |
| Basque Parliament | 2016-09-25 | 1,056,006 | 1,714,256 | 61.6 |
| Basque Parliament | 2012-10-21 | 1,135,568 | 1,775,351 | 63.96 |
| Basque Parliament | 2009-03-01 | 1,148,697 | 1,776,059 | 64.68 |
| Basque Parliament | 2005-04-17 | 1,223,634 | 1,799,500 | 68.0 |
| Basque Parliament | 2001-05-13 | 1,431,996 | 1,813,356 | 78.97 |
| Basque Parliament | 1998-10-25 | 1,275,008 | 1,821,608 | 69.99 |
| Basque Parliament | 1994-10-23 | 1,044,085 | 1,749,250 | 59.69 |