Who knows. I'd imagine that those who don't vote are less political than the others - whether vaguely social-liberal young people in the thriving cities or vaguely fundy in the impoverished countryside. Though there's also increasingly the question of the effect of mass migration to Western Europe on voting patterns. That probably hurts the PO most of all - much younger than average, and somewhat more educated, and young university educated people are the PO's strongest demographic.