But this can also be put down to the disillusionment with traditional parties, both on the right and left.
Sunday's vote was marked by the historically low turnout rate of 42 percent, which is below the expectations of the first round. All of this really sets the stage for a transformative Macron presidency.
The May 7 election of the 39-year-old Macron, himself untested, upended France's political landscape, a phenomenon that continued with the parliamentary victory of a party that didn't exist 14 months ago.
With almost all votes counted, Macron's party, alongside its MoDem allies, won more than 300 seats in the 577-seat National Assembly.
Laurianne Rossi, elected to the Hauts-de-Seine district on the outskirts of Paris, said even with the increase in female lawmakers, it would take time to make a real difference. ("Forward!") a year ago before he ran for the French Presidency.
Former National Front leader Jean-Marie Le Pen demanded Tuesday that his daughter Marine step down as party president over her electoral failures, after he was barred from attending a high-level meeting that he had tried to crash.
The National Assembly says new lawmakers' average age is down from 55 in the previous term to 49 now.
Mr Macron's party has filled the political space created by the disarray within the Socialists and the Republicans.
Under French legislation, a minimum of 15 parliamentarians is required to from a parliamentary group, an instrument of exerting influence on the lawmaking process.
"Go and vote!" Prime Minister Edouard Philippe said on Thursday.
"It is down to the President's desire to breathe new life into democracy and to the French people who wanted to give parliament a new face", he added. The winning margin is lower than some expected, with turnout down from 2012.
The former ruling Socialists fell down to an all-time low of 29 seats, losing 287 seats.
The conservative Republicans won 112 seats, falling well short of their aim of sharing power with Macron's party.
Marechal-Le Pen announced the decision just two days after her aunt lost to Macron.
Melenchon's hard-left France Unbowed won 17 seats as it also struggled to maintain the momentum it had during the presidential election.
Le Pen promised her party would remain a source of strong opposition alongside other bigger parties, saying: "Don't write us off so fast".
Jean-Luc Mélenchon, the leader of FI, spoke June 18 in Marseille where he was elected to the National Assembly.
Half the candidates fielded by Macron were women and the number of women MPs has gone up from 155 to 223 out of a total strength of 577, the highest ever. French voters are choosing legislators for t.
Pollsters predict the party will see its strength in parliament fall from almost 300 seats to around 20 after their five years in power under president Francois Hollande.
With a strong working majority now confirmed in the National Assembly, Macron's chances of spearheading reform look better than those of past leaders.