Far-right candidate Marine Le Pen sought on Tuesday to turn the debate in the final week of France's presidential election to immigration as she looked to reverse a dip in polls.
Surveys of voting intentions have for months shown Le Pen and centrist Emmanuel Macron qualifying on Sunday for the May 7 run-off, but the National Front leader has been under pressure since the start of April as conservative Francois Fillon and far-leftist Jean-Luc Melenchon close the gap on the favorites.
Speaking to a rally in Paris on Monday she vowed to suspend all immigration with an immediate moratorium, shield voters from globalization and strengthen security, subjects that have won her core backing and that she hopes can give her boost with about 30 percent of voters still undecided.
"For several weeks, we will need to assess the situation. The reality is that immigration is massive in our country and that migration flood that we are experiencing is not a fantasy," Le Pen told RTL radio on Tuesday - fleshing out details of the moratorium announcement.
The measure has not been part of her program, although she has put on record that she wants to limit annual immigration to just 10,000 people a year.
"I will carry out this moratorium for the exact purpose of implementing this 10,000 figure," she said.
Until now, Le Pen has struggled to entice her opponents in the presidential race to debate her party's trademark tough security and immigration stance. She, by contrast, has been put on the defensive over her position on leaving the euro zone, a proposal that lacks wide support.
Two polls on Tuesday showed Fillon and Melenchon still a few percentage points away from Le Pen and Macron. She would be beaten by any of the three others in a run-off, polls have repeatedly shown.
Le Pen's stance on immigration mainly competes with that of former prime minister Fillon, who despite being plagued by a financial scandal is slowly recovering in the polls, and has also targeted far-right voters.
Fillon told Europe 1 radio on Tuesday that Le Pen's moratorium idea was nonsensical, and that while numbers should come down, the key was to impose the country's values and identity.
"Immigration must be regulated because we have an economic, social and housing situation that doesn't enable us to welcome as many people who want to come here," Fillon said.
"(But) a moratorium makes no sense. What threatens us is not immigration, but the surrender of our values and our history. If we are proud of our history and defend it, then we will integrate foreigners more easily."
Security - which Le Pen's links closely to immigration - was threatening to once again become a campaign issue on Tuesday after two men were arrested in Marseille, southern France, on suspicion of planning an attack during the voting.
More than 230 people have died in militant Islamist attacks over the past two years, mostly at the hands of home-grown Islamist militants, often of north-African descent.
However, with no major attacks on French soil since last summer, polls show that unemployment, stuck around 10 percent, and political integrity - an issue that has arisen after accusations of nepotism leveled at Fillon in particular since early this year - are bigger issues for voters.