06 December 1978,
Hego Euskal Herria rejected the Spanish Constitution. Not half of the 1,913,980 people who voted (934,005) and 51.21 per cent abstained. Among the votes cast, they noted positively: 661.412, representing 70.81%.
As for the census and abstention, only 34.55% of the population of Hego Euskal Herria gave approval to the Spanish Constitution ola.Uno of every three.
Source:
Gotzon Hermosilla, New.