Founder of France's National Front party Jean-Marie Le Pen, 88, announced that his daughter, Marine Le Pen, didn't win the presidential election because of her stance on withdrawing from the Eurozone and the European Union, Reuters reports. "At 27 (year old) it is time for me to leave it for some time", she was quoted as saying.
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.
Ms Maréchal-Le Pen was critical of her aunt's leftist economic pledges during the campaign and of her promise to drop the euro in favour of a return to the franc.
Marechal-Le Pen, who is the granddaughter of National Front co-founder Jean-Marie Le Pen, is also said to be stepping down from a regional council where she leads the main opposition group.
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.
"I will propose to start this deep transformation of our movement in order to make a new political force", she added, as cited by Reuters.
Until Tuesday, that is, when she announced she was quitting politics.
Political expert Joel Gombin said of her decision: "This raises a lot of questions on how the party will evolve".
Marechal-Le Pen said in a letter published in a regional newspaper Tuesday that she won't run for re-election in June to represent her southeast Vaucluse district. While Marine is estranged from him, Marion has closer ties.
He said: "This will create a huge disappointment".
Marechal-Le Pen is regarded as more traditional and conservative than Marine Le Pen. In 2015, Maréchal-Le Pen told the Guardian, "I'm here for the long term". "Certainly, this is an interesting stake for the future, for parliamentary elections", the expert said.
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.