Well, it's a risky move. Especially since just tonight, Far Right won by a landslide in the EU Parliement elections, so it's likely the results will play against him.
Many of us (in the french subs) think it might be an attempt on his part to get far right into power through the parliment to show electors that all they spout is bull, and make them to suffer hard losses in the 2027 presidential elections.
Edit: some news drop and he apparently believes he can make big wins in this one. We'll see if this bet will pay off, but personally, I sincerly doubt it will ¯\_(ツ)_/¯