Beyond the election, I think its an important element of public debate largely because of the power of its arguments (and the appeal of its spokes-persons such as Bove and Besancenot) but like Hulot's "ecological pact," there is not actually a mass support of voters behind it.
Clinton's triangulation gave the US Bush and Blair's triangulation will possibly give the UK,Cameron so triangulation allows the right wignuts like Sarko to be chameleon-like since the opposition is also.
Differentiate herself from him in the debate; define in a calm, focused way what will be destroyed by Sarko if he is elected seems to be her only move now and hope women will want to vote en masse since it is the women's time to be President. After all, the men have had too many chances, unfulfilled promises and outsized egoes to do any good.