Municipalities with more than 20,000 voters	Data	Total
Vitoria-Gasteiz (Álava)	Postal vote processed	5,055
Vitoria-Gasteiz (Álava)	percentage	2.76
Eibar (Guipúzcoa)	Postal vote processed	862
Eibar (Guipúzcoa)	percentage	3.63
Irun (Guipúzcoa)	Postal vote processed	922
Irun (Guipúzcoa)	percentage	1.91
Errentería (Guipúzcoa)	Postal vote processed	456
Errentería (Guipúzcoa)	percentage	1.42
Donostia-San Sebastian (Guipúzcoa)	Postal vote processed	5,546
Donostia-San Sebastian (Guipúzcoa)	percentage	3.70
Barakaldo (Vizcaya)	Postal vote processed	1,683
Barakaldo (Vizcaya)	percentage	2.04
Basauri (Vizcaya)	Postal vote processed	949
Basauri (Vizcaya)	percentage	2.49
Bilbao (Vizcaya)	Postal vote processed	11,428
Bilbao (Vizcaya)	percentage	3.90
Durango (Vizcaya)	Postal vote processed	558
Durango (Vizcaya)	percentage	2.61
Galdakao (Vizcaya)	Postal vote processed	488
Galdakao (Vizcaya)	percentage	1.98
Getxo (Vizcaya)	Postal vote processed	3,665
Getxo (Vizcaya)	percentage	5.48
Leioa (Vizcaya)	Postal vote processed	638
Leioa (Vizcaya)	percentage	2.73
Portugalete (Vizcaya)	Postal vote processed	1,208
Portugalete (Vizcaya)	percentage	2.79
Santurtzi (Vizcaya)	Postal vote processed	956
Santurtzi (Vizcaya)	percentage	2.37
Sestao (Vizcaya)	Postal vote processed	535
Sestao (Vizcaya)	percentage	2.04