A day after his Socialist Party polled a record low of less than 14 per cent and one in four voters backed the FN, Hollande was hit by another stinging rebuke from the country's disgruntled electorate.
A poll released today revealed that only 11 per cent of voters think he would be a good presidential candidate for the Socialists in 2017.
With his authority crumbling, Hollande also faces the prospect of a rebellion within his party, where a significant minority of deputies blame the government's attempts to comply with the rules of the euro single currency for turning voters against the party and the European Union (EU).
A senior Socialist figure told AFP: "Hollande has got to get back on the campaign trail, not to win in 2017 but just to reconvince the French to trust him. You cannot govern a country with 18 per cent popularity ratings."
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Against that bleak backdrop, Hollande announced that he would address the nation in a televised address at 8:00 pm.
Final results gave the party led by Marine Le Pen just under 25 per cent of the vote on a turnout of just over 43 per cent.
That guaranteed them 24 of France's 74 seats in the 751-member European Parliament.
The FN's success was also bad news for the Union for a Popular Movement (UMP) of former president Nicolas Sarkozy, which was beaten into second place with 20.8 per cent of the vote and 20 seats.