That doesn't seem like a humiliation at all, particularly as PS went from 23% of the vote to 29% in the second round.
Everyone grows from the first to the second round since you have less competition.
As you said, the PS went from 23% to 29%.
Meanwhile the Coalition of Right went from 32% to 41%.
And consider that last elections,in 2010, the Socialists had 49.5% (against the 29% that they had now), while the coalition of right had 35% (against the 41% that they had now).
So before the Socialists had 15% more voters than the Coalition of right. Now they have 12% less.
Yes, this is a humiliation. A Complete humiliation caused by a complete failure of the multiculturalist socialists.
Just like the humiliation that they suffered at United Kingdom
Just like the humiliation that they suffered at Poland (Not even a single member at the Sejm! LOL).
And many other electoral humiliations that socialists like you are going to suffer.
Because people are waking up.