In the very first years of his presidency, François Mitterrand thought that he will really be successful on a day that another socialist was elected as a president of the Republic. This statement seemed to be prophetic with the victory of François Hollande, which took place 24 years after the victory of François Mitterrand and – after the sequential defeats of the Socialist Party’s candidates Lionel Jospin (in 1995 and 20022) and Ségolène Royal (in 2007) – allowed them finally to take the helm of the French government. The election of François Hollande was not a surprise. The very first opinion polls designated him as a winner showing the small popularity of Nicolas Sarkozy. Then one should estimate that the final electoral result obtained by François Hollande (i.e. 51.7% of the votes), from the point of view of the pre-election predictions of research institutes for the public opinion was a rather weak performance.