French election: The major players

Macron quit as economy minister in August and launched his independent presidential bid in November. The 39-year-old centrist formed his own political movement, En Marche (Forward), and is seen as a reformer. Despite having never held elected office, polls have predicted his win in the final round of voting in May. He's voiced admiration for German Chancellor Angela Merkel's refugee policy.

The National Front leader has adopted a more moderate tone than her anti-Semitic father, party founder Jean-Marie Le Pen. But she still takes a hard line on immigration, saying children of irregular migrants should not have access to public education. She also wants France to withdraw from the eurozone and have a referendum on EU membership. It's predicted she'll advance to the second round.

A surprise winner of the right-wing Republicans primaries, the socially conservative Fillon is seen to represent the interests of France's Catholic middle class. An admirer of former British Prime Minister Margaret Thatcher, he supports a liberal economic policy. Though Penelopegate and other scandals have marred Fillon's campaign, he has professed no wrongdoing and vowed to fight on.

In a runoff against former French PM Manuel Valls in the Socialist primary, Hamon was the more left-wing choice of the two politicians. The 49-year-old supports a universal basic income and wants to shorten the traditional work week. He has also spoken in support of increased investment in renewable energy. He faces an uphill battle as many socialist politicians have voiced support for Macron.

The Left Party's candidate landed fourth in the 2012 presidential elections. Melenchon, a current European Parliament member, believes the bloc's economic liberalism has stifled France. He hopes to profit from the center-left's disarray, but may split votes with socialist Hamon. Supported by the French Communist party, Melenchon advocates a shorter work week and climate protection.