How crucial was the Calais refugee camp in Marine Le Pen's election to the French Parliament in 2017?

Question

The Calais refugee camp ("Camp de la Lande" or "Calais Jungle") existed from January 2015 to October 2016, coinciding with the peak of the European migrant crisis. The camp drew global media attention and became a significant local issue.

Marine Le Pen became a member of the French Parliament in 2017 by winning the election in Pas-de-Calais's 11th constituency. Prior to 2017, this constituency consistently elected representatives from the left-wing Socialist Party (PS) and the French Communist Party (PCF). Similarly, in 2017, the 7th Constituency, which included the Calais camp, shifted from the left-wing PS to the right-wing LR party.

How big of a role did the Calais refugee camp play in Le Pen's 2017 election victory? I've tried doing my own research but couldn't locate a definitive answer.

Answer 1

Note that it is a common tactic of political parties to send their leader to a safe constituency for parliamentary elections.

This is not a coastal riding and is apparently 120km away from the Calais Jungle.

So, if the camp runs from 2015 to 2016 and she gets elected in 2017...

She already ran there in 2012, cuz best score in presidentials.

In the 2012 election, Le Pen, now leader of the FN, stood in Pas-de-Calais' 11th constituency, which now contained Henin-Beaumont following redistricting, where she had got her best results in the presidential election

In 2012, one opponent was our dear Melenchon, so it's probably a high dissatisfaction area (see the 2007 note).

So, she already had it as her safe haven before the Calais crossings became a large-scale thing.

In fact she ran there in 2007 as well

Wiki gives another reason for picking that riding:

In the 2007 election, Le Pen and her substitute Steeve Briois[clarification needed] stood for the FN in the Pas-de-Calais' 14th constituency, Hénin-Beaumont, a former coal mining area with high unemployment. Le Pen expressed the view that due to unemployment, offshoring and insecurity, the constituency symbolised the major problems of France. Le Pen's campaign committee was led by Daniel Janssens, who had previously served for 24 years as the socialist deputy mayor of Leforest.

Following their link - dated June 6, 2007

“This constituency is symbolic: unemployment, délocalisation, insecurity, it brings together the major problems of France”, says the vice-president of the FN who refutes the term “parachuted” by recalling that she was elected for the first time in 1999 in the regional elections in the Nord-Pas-de-Calais region.

Marine Le Pen was present in the 2002 legislative elections and was one of four frontist candidates from Pas-de-Calais to reach the second round.

In the 13th constituency (Lens) it achieved 24.2% in the first round then 32.3% in the second.

She decided in 2007 to slip into the neighboring 14th which includes the town of Henin-Beaumont with a view to the 2008 municipal elections. Her deputy, Steeve Briois, achieved 32.1% in the 2002 legislative elections.

In a constituency marked by an unemployment rate higher than the national average and the closures of large companies such as Metaleurop (870 job losses) the National Front candidates have for several years achieved scores higher than their national average.

She doesn't even talk about immigrants there - "délocalisation" means offshoring.

Don't get me wrong. I am sure the camps don't hurt her voting prospects. But she picked that riding before the camps and the crossings became an issue.