Le Pen performed remarkably well in rural areas as well as the country's south and northeast.
What they stand for and what their victory or defeat in the second round of the election could mean for France and Europe.
France had been a quasi-two-party system for decades. What changed?
How do you say “rust belt” in French? That's where the party was.
“Putin’s Russia is our role model for a patriotic economic policy,” Marine Le Pen has said, for instance.
French expats from Japan to Germany shared pictures online with the hashtag #JaiVote, or “I voted."
“This was an extremely weird campaign,” one voter in Paris said.
Can France's political center hold?