I know anecdotally that in my family circle just about everyone was taken in. Even longtime left voters, for example, the father of the one who did my procuration, whose father had been long-time socialist mayor of a small town between Marseille and Toulon, voted something other than PS for the first time in his life - detests the FN, profession liberale (medicin) and all that.  Ditto my wife's family, in fact, I remember having a convo with her mother just before the 2nd round where she's asking me what's wrong with Sarko, so I go down the list, and finally I get to who he would name as PM, and that seemed to have worked but I imagine she turned in the same ballot anyway. Sarko yes, Fillon not so much, as the subsequent legislatives showed.

My point is that, given where he is going fiscally and legislatively, he's going to lose a lot of these people, probably the same who didn't think much of what Borloo was leaking, because his bona fides as an outsider will be shown to have been utter bullshit. Enough people believed it the first time around but not the next time, five years is too long before the bullshit starts to smell.