But the Socialist party leader Francois Hollande is now the favourite to win. More embarrassingly, it has emerged that Mr Cameron has never even met Monsieur Hollande. A diplomatic faux pas, perhaps?
I am not going to seek out voters from the extreme right, I won't try to seduce them. The far right has strong support at the moment and that's the fault of Nicolas Sarkozy.
But some voters voted for the far right because they're angry (at Sarkozy). They are the voters who I want to hear from.
Francois Hollande's campaign manager said the candidate "wants to offer a dream" to the French people but was aware of the financial constraints that could face them.
He wants to offer a dream, but he doesn't want to sell illusions to the French people.
– Pierre Moscovici told BFM TV
Undeniably a first step toward change was taken yesterday.
A spokesman for the German Government has said that Chancellor Angela Merkel continues to support Nicolas Sarkozy in French elections - but that she has no plans to campaign for him in France.
Nicolas Sarkozy, who is the first sitting president to come second in the first round of a re-election bid, could go the way of 10 other eurozone leaders who have been ousted from office since the crisis started in late 2009.