Not great, popularity in the left is kindof ok, but overall he’s predicted to loose the 2snd stage of the vote on presidence. Media were very harsh on him for years so he’s seen like an ogre now by some. And his political position are mostly clear with less bullshit than lots… So it generates lots more hostility than the classic “common soc-dem politician” you forget after a few month because they have no stand position (he don’t want nuclear which is popular in france, he had some questionnable takes to say the least on jews at some points, he’s not hard against Putin, etc.).

Clearly a questionnable candidate, but at least he’s less corrupted, stupid, and replacable than the others.

Right now there’s a Mamdani style media blitz against him so it’s pretty divided. If you open any TV channel or radio station right now you’ll probably hear him being accused of all manners of devilry, most of it imaginary. As a result, older generations hate him kind of irrationally, while he’s decently popular among younger folks.

IIRC pretty divided, but he is an old darling of the left. He is looked at romantically.