They are just sensationalizing the news. Le Pen has lead the opinion polls for the first round for the past 2 years. But the problem is that not even a single poll has shown her winning the second round, as all the mainstream parties are ganging up against her.
Recall, March 20, live French TV channels TF1 and LCI, the first round of the presidential debates. According to opinion polls, the winner of the first debate of candidates in presidents of France became centrist Emmanuel macron. He looked convincing opponents and urged "to avoid rapprochement" with President Vladimir Putin. While opponents spoke more softly about building relations with Russia.