The battle to become France's president comes down to a clash of two visions – Emmanuel Macron is pro-globalisation and pro-EU, while Marine Le Pen rages against both.
As the rival camps celebrated reaching the decisive second round of the election, Le Pen said Sunday that voters will have "a very simple choice" on May 7.
"Either we continue on the path of... off-shoring jobs, unfair foreign competition, mass immigration and free movement of terrorists... or you choose France and borders that protect," she told her supporters.
Macron, 39, had a starkly different message: "I will be... the voice of hope for our country and for Europe," he told thousands of his followers.
The photogenic former investment banker, who had never before stood for election, started his centrist movement only 12 months ago.
Yet polls currently show he will easily become France's youngest ever president, beating Le Pen by more than 20 percentage points.
His meteoric rise began when President Francois Hollande chose him as an economic advisor and then parachuted him into his Socialist cabinet as economy minister.
But shrewdly sensing his chance, Macron turned his back on Hollande when he quit the cabinet in August to concentrate on building up his own centrist political movement "En Marche."
Since then, he has amassed 250,000 members and confounded critics who said his appeal would not reach beyond young, urban professionals.
In politics as well as his personal life, Macron has also broken traditions.
The theatre and poetry lover from a middle-class family in Amiens, northeast France, fell for his secondary school drama teacher.
Brigitte Trogneux, a mother of three and 25 years older than Macron, left her husband and married the young prodigy in 2007.
"At the age of 17, Emmanuel said to me: 'Whatever you do, I will marry you!'," Trogneux told Paris Match magazine last April, summing up a story that has captivated the French media.
Political school of hard knocks
Unlike Macron, 48-year-old Le Pen is steeped in hard-edged politics.
Her pugnacious father Jean-Marie Le Pen reached the runoff of the 2002 presidential election, but was roundly beaten by the centre-right Jacques Chirac.
Fifteen years later his gravel-voiced daughter believes she can become France's first woman president, and the first from the National Front (FN) party that her father founded.
She faces an uphill task as her younger rival appears to attract a broader spectrum of voters.
She also goes into the runoff with several investigations hanging over the FN and her entourage for alleged funding scandals, while she is also being probed after tweeting pictures of Islamic State atrocities.
In the last presidential election in 2012 Le Pen finished third with just under 18%.
She has worked assiduously to try to rid the party of its more extreme anti-Semitic edge – and kicked her father out of the party after he repeatedly described the Holocaust as a "detail of history".
Over the past six years, Le Pen's rebranded "party of patriots" has been propelled by the anti-globalisation, anti-establishment fury that drove Britain's vote to leave the EU and Donald Trump's election in the United States.
Now a twice-divorced mother of three, she guards her private life zealously, in contrast to Macron.
She appears rarely as a couple with her current partner, who is the FN's vice-president Louis Aliot.
Le Pen developed her flair for sharp putdowns as a lawyer defending illegal immigrants facing deportation as a state-appointed attorney.
Despite that experience she blames migration – and the European Union – for France's economic woes.
Key proposals by frontrunners
Centrist Emmanuel Macron and hard-right leader Marine Le Pen will contest the May 7 runoff for the French presidency, Here is a snapshot of their policy programmes:
Macron: Economic 'liberation'
- Cut the corporation tax rate from 33% to 25% and give bosses more flexibility to negotiate working time with staff at the company level
- Give all workers, including the self-employed, access to unemployment benefits
- Accelerate integration in the eurozone by giving it a central parliament, finance minister and budget. Organise democratic conventions in all EU member states to discuss reforming the bloc
- Create tax incentives to encourage companies to hire jobseekers from underprivileged neighbourhoods
- Introduce one month's obligatory military service for all 18- to 21-year-olds
Le Pen: France first
- Negotiate France's exit from the eurozone and return to the franc. Immediately suspend membership of the European passport-free Schengen area and restore border controls. Hold a "Frexit" referendum after six months of negotiations with Brussels on transforming the union into a club of nation states
- Reduce legal immigration to 10,000 people per year, require refugees seeking asylum in France to apply in their home region, hold a referendum on reforms including introducing a French-first policy on jobs and housing
- Impose a 35% tax on products from companies that offshore factory jobs
- Lower the minimum retirement age from 62 to 60 and expand family subsidies
- Pull France out of Naro's central command and develop closer relations with Russia
