https://www.naiz.eus/fr/hemeroteca/gara/editions/2019-05-09/hemeroteca_articles/pnv-y-pse-se-han-coaligado-con-el-pp-tres-veces-mas-que-eh-bildu-y-ep?slug=pnv-y-pse-se-han-coaligado-con-el-pp-tres-veces-mas-que-eh-bildu-y-ep