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Fillon had been a favourite to win but after an Elabe poll revealed three out of four people in France are unconvinced by his defence surrounding suspicions of his wife’s fictitious jobs, the right-wing candidate is now lagging behind National Front leader Marine Le Pen and could soon be overtaken by independent centrist Emmanuel Macron. With his presidency bid in disarray, MPs within his own Les Républicains party are concerned Fillon has become an electoral liability who could cost them in elections later this year.

GETTY Fillon's candidacy is being called into question by his own party's MPs

Let us be honest, regardless we like him or not, Juppe is the only one in France who can confidently defeat Le Pen Luc Ferry

Georges Fenech, Les Républicains MP for the Rhône, said Fillon’s candidacy was “no longer tenable” and branded his party’s nomination “null and void” in the wake of the allegations. Former education minister Luc Ferry echoed Mr Fenech’s views, backing Fillon’s former rival Alain Juppé as his replacement. He tweeted: "The right will not make it to the second round without Juppe's returning.

He had pledged to heal France’s divisions and called for the UK’s Brexit timetable to be sped up, with the former French prime minister and Bordeaux mayor adding that he doesn’t want to see Britain published for its decision to leave the EU. Other possible alternatives put forward by the French media include former minister Francois Baroin, head of the Ile-de-France region around Paris, Valérie Pécresse, or ex-health minister Xavier Bertrand.

GETTY Former Bordeaux mayor Alain Juppe is being tipped as a possible replacement for Fillon