https://www.naiz.eus/eu/hemeroteca/gara/editions/2019-12-01/hemeroteca_articles/las-bases-del-spd-optan-por-el-cambio-y-agudizan-la-crisis-interna?slug=las-bases-del-spd-optan-por-el-cambio-y-agudizan-la-crisis-interna