

If by recent years, you mean the last 20+ years, sure.
I’m not sure it truly hurts the Front National chances in 2027, however, the expected heir, Jordan Bardella, is not nearly as smart as MLP, so maybe it will make enough of a difference if it ends up a close thing. I would say the political situation in France is pretty volatile, hard to say what it will look like in 2 years.
There is also the possibility (slim, imho, but still real) of MLP either winning her appeal (which should take place sometime in 2026), or at least having the ineligibility sanction removed, which I think would give her a huge boost.
For just the appeal I don’t think anyone would need to rush anything to have it done before 2027, if it goes to cassation and beyond it probably would need to be rushed somehow for it to happen before 2027