He's got Le Pen rattled at an important phase in the election campaign, even without a manifesto.
Just a month after moving into the Élysée Palace, the new president will face the country's parliamentary elections.
The far-right candidate has published a 144-point plan for her proposed presidency.
The top vote-getter in the first round of the election, France's former finance minister has been working to build a political narrative outside of the country's traditional political parties.
After a big weekend of campaign launches, most candidates are now in place for the 2017 presidential race.
The former PM stands accused of employing his wife for years without bothering to mention it to voters.
Victory seems a distant prospect, but the latest polling suggests the ruling socialist party might not be quite out for the count.
What hope of finding a candidate who can hold onto the presidency?
There's a large field of hopefuls for the first round, but they all need to be able to take on Marine Le Pen.
The most unpopular president of the fifth republic won't be seeking a second mandate.
He's only Mr Nobody to people who haven't being paying attention.
He's the surprise winner of the republican nomination, but Fillon is in a strong position to attack the weaknesses of the far right.
The former president has lost out to his own prime minister in the first round of the Republican primary.
The Front National leader is feeling confident after Brexit and Trump.
While the French public comes to terms with a series of appalling attacks, politicians seize the opportunity to position themselves ahead of next year's Presidential election.