The northern French port of Calais has emerged as the most extreme-right wing town in France following council elections on Sunday.

The anti-immigration National Front party scored a massive 49 per cent of the votes in the town that is home to 6,000 migrants all hoping to sneak into Britain.

Their vote has more than doubled since the last regional elections in 2010, when there were only around 800 migrants in the town.

Support for the hardline party led by firebrand Marine Le Pen has now surged in recent months as Calais finds itself overrun with refugees living in a squalid woodland camp near the port

Support for the hardline party led by firebrand Marine Le Pen has now surged in recent months as Calais finds itself overrun with refugees living in a squalid woodland camp near the port.

Their victory was also boosted by fears over the Islamic State terror attacks that killed 130 people in Paris on November 13.

Record levels of unemployment and immigration across France also help the anti-European party secure 29.4 per cent of the vote nationwide - the National Front best ever local elections results.

The election was for control of the entire Nord Pas-de-Calais Piciadie regional council, and not for Calais town council where centre-right Natacha Bouchart is mayor.

Calais residents have become increasingly angry in recent months as migrant numbers spiral and violence frequently erupts on roads around the ferry port and Channel Tunnel terminal.

French authorities said they believed that some clashes between migrants and police was provoked by British militant refugee support groups No Borders and Black Blocs.

The anti-immigration National Front party scored a massive 49 per cent of the votes in the town that is home to 6,000 migrants all hoping to sneak into Britain

Mayor Ms Bouchart has blamed Britain's 'black market economy' and 'cushy benefits system' for the migrant crisis in her town

Mayor Ms Bouchart has blamed Britain's 'black market economy' and 'cushy benefits system' for the migrant crisis in her town.

She said: 'They want to go to England because they can expect better conditions on arrival there than anywhere else in Europe or even internationally.

'There are no ID cards. They can easily find work outside the formal economy, which is not really controlled.

'Calais is a hostage to the British. The migrants come here to get to Britain.

'The situation here is barely manageable. The UK border should be moved from Calais to the English side of the Channel because we're not here to do their jobs.'

French President Francois Hollande called Wednesday for the country's political parties to unite to block the far-right National Front (FN) in this weekend's regional elections.

Calais residents have become increasingly angry in recent months as migrant numbers spiral and violence frequently erupts on roads around the ferry port and Channel Tunnel terminal

With the anti-immigration party topping the poll in the first round last Sunday, Hollande's spokesman Stephane Le Foll quoted the president as saying there 'needed to be clarity in the behaviour and attitude of all political leaders to defend the values of the Republic'.

He said the elections were particularly important given the power that regional governments have over education, transport and environment policy.

'The regions have a major role in deciding the future' of the country, he said.