Incumbent Emmanuel Macron will face far-right nationalist Marine Le Pen in a winner-takes-all runoff for the French presidency, after they both advanced Sunday in the first round of voting in the country’s election to set up another head-to-head clash of their sharply opposing visions for France.

But while Macron won t heir last contest in 2017 by a landslide to become France’s youngest-ever president, the same outcome this time is far from guaranteed. Macron, now 44, emerged ahead from Sunday’s first round, but the runoff is essentially a new election and the next two weeks of campaigning to the April 24 second-round vote promise to be bruising and confrontational against his 53-year-old political nemesis.

Savvier and more polished as she makes her third attempt to become France’s first woman president, Le Pen was handsomely rewarded Sunday at the ballot box for her years-long effort to rebrand herself as more pragmatic and less extreme. Macron has accused Le Pen of pushing an extremist manifesto of racist, ruinous policies. Le Pen wants to roll back some rights for Muslims, banning them from wearing headscarves in public, and to drastically reduce immigration from outside Europe.