Macron, Le Pen cling on to first round lead in French election race - Le Monde/Cevipof poll

A man looks at campaign posters of the 11th candidates who run in the 2017 French presidential election in Enghien-les-Bains, near Paris, France April 19, 2017. REUTERS/Christian Hartmann

PARIS (Reuters) - Centrist Emmanuel Macron clung on to his status as favourite to win France's presidential election in a four-way race that is too close to call, as the camp of far-right challenger Marine Le Pen ramped up its eurosceptic rhetoric in a row with Brussels.

A closely-watched Cevipof opinion poll published on Wednesday showed frontrunners Macron and Le Pen both losing some momentum ahead of Sunday's first round, and conservative Francois Fillon and far-left candidate Jean-Luc Melenchon still in contention for the second round run-off.