Le Monde breaks it down amazingly well:
—Left candidates:
132 dropped out
5 did not drop out in districts with an RN threat
—Macronists:
81 dropped out
16 didn't in "threat" districts
—Conservatives didn't care:
3 dropped out
12 didn't
https://lemonde.fr/les-decodeurs/article/2024/07/02/legislatives-2024-pour-faire-barrage-au-rn-195-candidats-et-candidates-se-sont-deja-desistes-suivez-le-decompte-en-temps-reel_6245837_4355771.html
—Left candidates:
132 dropped out
5 did not drop out in districts with an RN threat
—Macronists:
81 dropped out
16 didn't in "threat" districts
—Conservatives didn't care:
3 dropped out
12 didn't
https://lemonde.fr/les-decodeurs/article/2024/07/02/legislatives-2024-pour-faire-barrage-au-rn-195-candidats-et-candidates-se-sont-deja-desistes-suivez-le-decompte-en-temps-reel_6245837_4355771.html
Comments
While it can't just erase Macronists' extraordinarily equivocating 'pox on both houses' rhetoric during the campaign, it does make it a lot harder for the far-right to win on Sunday.
But such perfect or even near perfect vote transfers is just VERY unrealistic. It's just not happening.
There were 8 in 2022; 1 in 2017. There were going to be 311 this year.
This is to a great extent a matter of higher turnout because this is indexed to turnout effectively.