Their challengers aren't far behind.
The polls have four candidates - centrist Emmanuel Macron, conservative Francois Fillon and communist Jean-Luc Melenchon - neck and neck within the margin of error.
What has been interesting about this Presidential race has been that most of the polls have agreed that Macron will win both the first and second round of voting, however, there is a lot of divergence between bookmakers on the implicit chances of Fillon and Le Pen winning the first round.
The pro-Europe Macron continued his appeal on Wednesday via social media and with a rally in the western city of Nantes. She held her final rally of the campaign in Marseille, where there was tight security after police uncovered evidence of a planned terror attack earlier this week.
Two polls on Tuesday showed Mr. Fillon and Mr. Melenchon still a few percentage points away from Le Pen and Mr. Macron.
Gaspard Flamant says he fears Le Pen will win the election's first-round vote.
Alain Juppe, also beaten by Fillon in the primaries but a more popular figure than Sarkozy, will be at Fillon's side on the campaign trail on Wednesday, a member of Fillon's entourage said.More news: United CEO felt 'ashamed' by video as Christie asks to suspend overbooking
A source close to the investigation said on Wednesday that the candidate featured on the newspaper cutting was Fillon.
Melenchon is a Far Left candidate, so we could see a sell-off in French stocks, as his economic policies may not be considered positive for corporate France. After a good showing in television debates and at rallies, his promises to tax the rich and renegotiate France's role in the European Union and trade deals have attracted voters who have rejected the Socialist party, led by candidate Benoit Hamon. French presidential election candidate for the En Marche! movement Emmanuel Macron reacts during his visit at the KRYS group's headquarters in Bazainville, near Paris Tuesday April 18, 2017. They dropped to about 12 percent, before rising steadily from mid-March to his current 19 percent.
With millions of French voters still undecided or planning to abstain, the vote is the most unpredictable in France in decades and investors are nervous about potential last-minute surprises that could trigger market turmoil.
Socialist candidate Benoit Hamon promised that if he won France's presidency he would give asylum to Edward Snowden, the former U.S. National Security Agency contractor who has taken refuge in Moscow since revealing details of secret U.S. government eavesdropping programs in 2013.
Her speech provoke a spontaneous outburst of the national anthem from her crowd of supporters.
Cevipof is the center of political research of Sciences Po, the Paris Institute of Political Studies, a university in the French capital.
The election race for a successor to the deeply unpopular Francois Hollande has become increasingly tense as the gap between the leading candidates shrinks.