Scores of high-profile supporters and campaign aides have quit since Fillon announced on Wednesday he would soon be placed under formal investigation by judicial authorities over allegations that he illegally funneled public funds to his wife and children.
Thierry Solère, the campaign’s spokesperson, announced his resignation on Friday.
Stefanini will officially quit his job on Sunday evening and be replaced by to Vincent Chriqui, mayor of the commune of Bourgoin-Jallieu and a close Fillon ally.
With less than two months to go until the first round of the election on April 23, Fillon lies third in the opinion polls, behind far-right leader Marine Le Pen and centrist Emmanuel Macron. The top two candidates will qualify for a run-off, to take place two weeks later.