Some prominent members of the conservative party (LR) backing Left candidates who face the far-right.
For instance, head of the Nord region endorsing a Communist candidate: courrier-picard.fr/id538873/art...
Or in greater Paris region, LR leader backs a Green candidate in amusing way:
I'm sure you've mentioned before but to save me a long scroll what is the basic relationship between LR and NR at like a party level, outliers like the above notwithstanding?
There's no formal relationship, and virtually no governing relationship even sub-nationally.
Ideologically though... a lot of RN has been absorbed in LR.