The anti-EU firebrand has rejoined the party after she briefly left ahead of the second round of voting for the presidential election last week, where she secured just 34 per cent of the vote.
But it is unclear if Ms Le Pen will be standing in the June parliamentary election as Front National position themselves to be a thorn in side of the newly elected president.
Despite winning the top job, Emmanuel Macron faces a bitter fight for power in the parliamentary elections as the centrist battles to push ahead with his progressive politics.
President Macron, who established centrist party En Marche! in April 2016, currently has no members from his own party in parliament.
The Europhile former banker will be forced to forge alliances with other parties to pass legislation through the assembly if he is unable to build a parliamentary majority.
And with a record low turnout and a huge number of abstentions and spoiled ballots, his rise to the presidency may not mean a large return of MPs.
Polling by Opinionway last week claimed Mr Macron could take as many as 286 seats in the election, but would still fall short of an absolute majority.
Meanwhile the Front National are forecast to return 40 MPs in the upcoming vote following Ms Le Pen’s success in reaching the second round of the presidential race.
Despite losing out at the final hurdle, Ms Le Pen has managed to increase Front National’s share of the vote in every election since she became leader in 2011.
But the estimated 40 seats is low compared to Marine Le Pen’s share of the vote in the first round of the presidential race, where she came top in 216 of the nation’s 577 constituencies.
It comes as Marion Maréchal-Le Pen, who was once widely tipped to succeed her aunt Marine as leader of the Front National, revealed she was stepping down from politics.
The 27-year-old has been long considered a rising star of the Front National party with support of Southern traditional conservative voters who shy away from the views of her aunt.
Her choice to step down has left Front National with just one sitting MP ahead of the parliamentary election.