The mayor said the party, which Mrs Le Pen pledged to “overhaul” following her crushing defeat to Emmanuel Macron in last month’s presidential election, would not “suddenly become” pro-Europe and pro-immigration.
Macron’s administration had repeatedly rejected speculations of the minister’s possible resignation in connection to the ongoing investigation.
Turnout in the parliamentary elections were estimated to be extremely low, with a senior En Marche! official warning that high levels of abstention are bad news for democracy.
The Macron steamroller effect could be blunted with the entrance into parliament of some prickly opponents.
The party Macron founded just 14 months ago has caused a political quake even if the winning score was considerably lower than the 470 seats predicted by some pre-vote surveys.
Marine Le Pen celebrated a political first after she was finally elected to the French Assembly in yesterday’s second-round parliamentary election, though her personal victory stood at odds with the poor performance of her right-wing National Front party.
But he may face criticism over turnout; just under 45 percent of registered voters cast a ballot in the election’s second round, the lowest in modern French history.
He won instant plaudits from France’s closest ally Germany, with Chancellor Angela Merkel’s spokesman hailing his “clear parliamentary majority”.
The party leader, Francois Baroin, said he was happy that the Republicans will be “big enough” to “make its differences with LRM heard”. He said that the majority “will have one mission: to take action for France“. The victorious newcomers started arriving Monday at the National Assembly to learn their way around before the first parliament session next week.
The 39-year-old President was once a rank outsider for the presidency and was unknown to the French public until 2014 but looks set to achieve the previously unthinkable by securing a position of overwhelming power.
However, the National Front party she leads is only forecast to get a total of four to eight seats.
The party that Mr Macron, 39, founded 14 months ago has caused a political natural disaster, despite its 350-seat tally being lower than the 470 predicted by some polls.
“Abstention has broken new records, and mistrust of the republic has reached a peak”, Le Pen said.
Le Pen’s victory in the northern former coalmining town of Henin-Beaumont was a rare bright spot for her nationalist and anti-EU party that was once hoping to emerge as the principal opposition to Macron.
But Jean-Luc Melenchon, the far-left candidate he defeated in May, said an all-powerful Mr Macron “is going to end up believing he walks on water”.