Political quake in France as far right triumphs in EU vote

France suffered a political earthquake today as the far-right National Front topped the polls in European elections with an unprecedented haul of one in every four votes cast, exit polls indicated.

Average results from five polling institutes pointed to the anti-immigration, anti-EU party led by Marine Le Pen taking 24-25% of the popular vote and around a third -- between 23 and 25 -- of France's 74 seats in the European Parliament.

The mainstream right Union for a Popular Movement was beaten into second place with a projected 20-21% score and the ruling Socialist Party was left languishing in third place with just 14-15%.

The result is the highest score ever obtained in a nationwide election by the National Front (FN) and follows breakthrough gains made by the once pariah party in municipal elections earlier in the year.

As FN leaders celebrated their triumph by demanding the resignation of Socialist President Francois Hollande and the dissolution of France's National Assembly, senior minister Segolene Royal acknowledged that the far right's success represented "a shock on a global scale."

Marine Le Pen, who has been credited with significantly broadening the appeal of a party founded by her father Jean-Marie Le Pen, said voters had demonstrated their desire to "reclaim the reins of their own destiny."

"Our people demand only one type of politics - a politics of the French, for the French and with the French."

"They have said they no longer want to be ruled from outside, to have to submit to laws they did not vote for or to obey (EU) commissioners who are not subject to the legitimacy of universal suffrage."

The FN's score is significantly better than the support of just under 18% that Marine Le Pen secured in the first round of the 2012 presidential election and suggests she has a real chance of progressing to the final two-candidate run-off when France next votes for its head of state, in 2017.

Political analysts continue to consider the prospect of an FN president as extremely unlikely but many see French politics being transformed into a three-party system in which Le Pen's party could wield considerable influence.