Powerful mainstream Socialists, such as former Prime Minister Laurent Fabius, joined traditional leftist minorities in the party – either rigidly euroskeptic or unrealistically euromaximalist – to rally around refusal. This stance came as a shock from Fabius, a signatory of the Single Act of 1986, a party leader during the Maastricht Treaty negotiations, and Finance Minister when France adopted the euro in 2001.
获得这样的结果并非一帆风顺。一些有势力的社会党主流成员，诸如前总理洛朗·法比尤斯——党内为数不多的传统左翼人士，对这次投票表示反对。这些传统左翼人士要么是彻底的欧洲怀疑论者，要么就是极端的欧洲最大化论者。法比尤斯总理的这一立场令人惊讶，他曾签署了1986年的单一欧洲法，领导过马斯垂克条约的谈判，同时也是2001年法国采纳欧元货币的财政部长。