Marine Le Pen vowed to reinstate France's borders and declared mass-migration as 'a tragedy' for her country as she savaged the EU during a rally on Tuesday.

The far-right National Front candidate also pledged to suspend all immigration if she wins the presidency, saying her rivals support 'savage globalisation'.

Chants of 'en est chez nous' - 'this is our country' - broke out among the 5,000 supporters who had turned out to hear her speak in Paris ahead of Sunday's first round of voting.

Maine Le Pen vowed to halt French immigration and reverse 'savage globalisation' as she spoke to 5,000 supporters in Paris ahead of Sunday's first round of voting

Le Pen encouraged the crowd to boo the EU and it policy of free movement, saying 'mass-migration has been a tragedy for France'

Le Pen is widely expected to make it through Sunday's vote before facing off against one other candidate, likely pro-Europe Emmanuel Macron, in May's run-off

National Front supporters chanted 'en est chez nous' - 'this is our country' - as Le Pen vowed to 'protect' them if she wins the presidential race

Le Pen is widely expected to be one of the two candidates to make it through that first round, along with pro-European Emmanuel Macron, before a run-off on May 7.

However, polls have been tightening in recent days, with hard-left candidate Jean-Luc Melenchon now within the margin of error, along with Francois Fillon, the former frontrunner whose campaign has been dogged by allegations of corruption.

Le Pen told supporters: 'I will protect you. My first measure as president will be to reinstate France's borders.

'The choice on Sunday is simple. It is a choice between a France that is rising again and a France that is sinking.

Referring to her supporters as 'patriots', she added: 'Fight for victory, until the very last minute.

'If every patriot can this week convince just one abstentionist, just one undecided voter, we are sure to win!

Getting the crowd to boo the EU and its border-free Schengen area, Le Pen said: 'Mass immigration is not an opportunity for France, it's a tragedy for France.'

The rally was twice interrupted - once by a woman who jumped on the stage before being carried away (pictured), and a second time by a topless woman in the crowd

Earlier in the day, masked demonstrators had clashed with riot police outside the venue for Le Pen's speech as they threw rocks and bottles

Police responded with teargas as the masked protesters tried to disrupt Le Pen's rally

Clouds of teargas surround the venue where Le Pen's rally was taking place at police on a bridge kept the protesters away

Protesters try to kick away teargas canisters which were fired towards them as the protested against Le Pen today

Promising to immediately impose a moratorium on immigration, she said: 'The French sometimes have fewer rights than foreigners - even illegal ones.'

Earlier on Tuesday Scuffles broke out between police and about 70 protesters outside the hall where Le Pen was addressing supporters.

Police fired teargas at the protesters, who threw rocks and chunks of wood as they tried to get closer to the Zenith concert hall.

French voters go to the polls on Sunday in the first round of the most unpredictable presidential election in decades.

Le Pen told her supporters: 'The choice on Sunday is simple: It is a choice between a France that is rising again and a France that is sinking.'

Opinion polls have for months shown Le Pen and centrist Emmanuel Macron qualifying for the May 7 run-off, but the gap with conservative Francois Fillon and far-leftist Jean-Luc Melenchon has been tightening.

Melenchon, enjoying a late poll surge, campaigned on a barge floating through the canals of Paris and Fillon took his tough-on-security campaign to the southern French city of Nice, which was scarred by a deadly attack last year that killed 86 people.

The race is being watched internationally as an important gauge of populist sentiment, and the outcome is increasingly uncertain just six days before Sunday's first round vote.

Riot police and officials from the National Front's own security team, the Département Protection et Sécurité (DPS) patrol outside the Zenith concert hall

Tear gas floats in the air during a protest outside the venue of a campaign rally for Marine Le Pen today

A man walks past electoral posters displaying the presidential candidates, Socialist Benoit Hamon (left), centrist Emmanuel Macron (centre) and Right-winger Marine Le Pen (right)

Supporters wait for the start of a campaign political rally for Marine Le Pen in Paris today

Le Pen told a crowd of around 5,000 National Front supporters: 'Give us France back, for God's sake.

They responded by chanting: 'This is our home!'

Le Pen told the rally: 'I will protect you. My first measure as president will be to reinstate France's borders.

'Mass immigration is not an opportunity for France, it's a tragedy for France. We can't decide who is allowed to come here any more.

'The French sometimes have fewer rights than foreigners - even illegal ones.'

Le Pen's nationalist rhetoric and Melenchon's anti-globalisation campaign have resonated with French voters sick of the status quo.

Macron, meanwhile, is painting himself as an anti-establishment figure seeking to bury the traditional left-right spectrum that has governed France for decades.

The top two vote-getters Sunday of the 11 candidates on the ballot advance to the May 7 presidential runoff.

The latest polls suggest that Le Pen, Macron, Melenchon and Fillon all have a chance of reaching the runoff - and as many as a third of voters remain undecided.

French riot police jog down the street towards protesters seeking to disrupt Le Pen's rally

Officers from the French CRS riot police monitor the situation outside the Zenith concert hall

Supporters from Serbia wait for the start of a campaign political rally for Marine Le Pen

Macron, a former investment banker well connected in the business world, held a rally in Paris on Monday attended by 20,000 people, according to organizers.

Advocating for strong pro-European views, he has pledged to represent an 'open, confident, winning France' in contrast with far-right and far-left rivals.

Without naming them, he said Le Pen and Melenchon want to isolate France form the rest of the world.

'We feel everywhere the temptation of barbarism ready to surge in other guises ... No, we will not let them do it,' he said.

He also made an implicit reference to Fillon by suggesting some are seeking the presidency to get judicial immunity.

Fillon's austerity-focused campaign has been damaged by accusations that he misused taxpayer money to pay his wife and children for government jobs that they allegedly did not perform. French investigators are probing the case.

French Left party leader and candidate for the 2017 French presidential election, Jean-Luc Melenchon makes a speech from a barge on the canal de l'Ourcq, in Paris today

Melenchon, enjoying a late poll surge, campaigned on a barge today

Fillon denies wrongdoing and is focusing instead on security issues that resonate with many voters after two years of deadly attacks across the country. French voters will cast their ballots under a state of emergency that's been repeatedly extended as new violence has hit.

After Macron, Le Pen is holding her last big rally in the Paris region later Monday.

Meanwhile, Melenchon, speaking on a river boat in Pantin, in the Paris suburbs, said he doesn't want France to exit the European Union but would be ready to do it if other member states don't accept negotiations to reform the 28-nation bloc.

'European treaties are destroying Europe. I am not destroying Europe, I am not putting it in danger, I'm not the one who made (Britain) go out, I'm not the one who is making troubles in all (European) countries, I'm not provoking nationalist feeling everywhere. It is the European way of organization that is pushing people toward that,' he said.

Socialist candidate Benoit Hamon insisted Monday that he, too, remains a contender.

'Things are evolving,' he said on Europe-1 radio.

The Socialists' campaign has suffered from internal divisions and Socialist President Francois Hollande's dismal image - he's so unpopular that he declined to seek a second term.