The party is far from over at National Front HQ in Paris, despite Marine Le Pen's mauling in French presidential election.
Ms Marechal-Le Pen had always been considered a rising star of the Front National party but yesterday she reportedly made the shock decision to leave the political scene. She added that she had told her aunt, who understood, respecting the choice because she - that is, Marine - knows how hard political life can be.
Mr Le Pen said: "I had insisted that she be a candidate and she had been successful".
"I think the era of politicians disconnected from the real with decades of elective offices behind them is gone", she added. National Front leader Marine Le Pen puts a major stake on parliamentary elections in France by announcing a new movement, Professor of the MGIMO University Evgeniya Obichkina told TASS on Monday.
Marechal-Le Pen, whom some in the party hope will eventually take over from her aunt, and who always gets loud applause at party rallies, is more conservative on social and economic issues.
During the presidential election campaign, 48-year-old Marine Le Pen had tried to extend her party's appeal to a wider base and had stepped down as party leader.More news: Hamas says Ismail Haniyeh chosen as Islamic group's leader
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After losing to Macron on Sunday, Le Pen said she wanted to transform the party, while other party officials said an alternative name was being considered.
Her decision follows the huge loss by her aunt, Marine Le Pen, at the French presidential election on Sunday where the anti-EU candidate won just 33.9 per cent of the vote.
Marechal-Le Pen is regarded as more traditional and conservative than Marine Le Pen.
This will create a great disappointment. "Marion represented hope for many National Front sympathizers and voters".
"This raises a lot of questions on how the party will evolve", said Joel Gombin, a specialist of the FN at the Jean Jaures research institute.