Mr Asselineau doe not meet the notability criteria of WP:POLITICIAN or even the general notability guideline.
"Political carreer": as a reminder (from WP:POLITICIAN#3), "Just being an elected local official, or an unelected candidate for political office, does not guarantee notability".
The provided sources are the following: general results of the local elections in Libération (so this tells us he was elected as one of the ~160 other members of the Paris council), then he is mentionned 5 times in 6 years in Le Parisien: 2004 (Mr A becomes a UMP member), 2006 (Mr A is leaving the UMP), 2007 (considers the coming elections) and 2007 again (about the non registered members of the council such as Mr A) and finally 2008 about Mr A as giving up being a candidate. So coverage by Le Parisien of this Paris politician for his tenure period (2001-2007): 2 brief articles about his party changes, 3 mentions in 2007 where he first candidates then gives up.
Then we have the one single mention of Mr A in a national newspaper : Le Figaro, a 2 pragraphs article in 2008 about Mr A saying he withdraws from the election. This is the sole article from a newspaper ever mentionning the Union populaire républicaine (UPR), the party that was then newly created (see next section).
"President of a political party": Except for this political site reproducing a press release on the creation of the new party in 2007 (and the mention of the Figaro), the only thing we have is a couple of entries in enquete-debat.fr, such as in Januray 2011, about the fact that the article of Mr A on WP:fr was deleted. But Enquête & Débat seems to be a collective newsblog created mid-2010 (see this), so based on WP:Reliable sources we cannot use it. What the party itself has to say about his press coverage does not help us: a couple (4) of annoucements of conferences in local newspapers, apparently Mr A spoke 4 times in local radios between 2007 and 2010, there is one article in a local newspaper (Le Bien Public) in 2008 and one article from 2007 in Entreprendre, an economic monthly, about a dinner-conference.
So although I would certainly favor the lowest of all possible barriers to notability for political parties, regardless of ideology, this party doesn't pass any barrier at all: it was created 4 years ago, never had any coverage in any known newspaper, no-one ever analysed the party's programme or position. I mean these guys are so minor and unknown that there isn't even a newspaper interested enough to say that they are minor and unknown!
"Staff member of various cabinets" Mr A is a civil servant. He is inspector general of finance, which means he is one of the 260 members of the General Inspection of Finances, an auditing body of the French administration. This does not make him very notable. More important, Mr A was head of staff or staff member for ministers or similar personnalities, and this is the area where some will tell you that there are "newspapers articles whose title is the name of Asselineau".
But these are not "press articles", they are mere mentions of appointments publihed by Les Echos in what they call Le Carnet, ie entries related to the appointment of civil servants or executives. You will find in the Carnet brief announcements relating to deaths or appointments of civil servants or in corporates. Something pretty similar seems to be the announcements published in The Hill. It is pretty sure not all the people mentionned in the Carnet or in the announcements of The Hill are notable for WP.
Mr A has a total of 8 hits in Les Echos over a period of 12 years.
You can compare that with Mr Philippe Andres, 7 entries in the Carnet, or Pascal Faure 20 entries. They do not have a WP article, and probably will never have one. You can also have a look at announcements published in The Hill. Lots of people have entries therein, but have no article on Wikipedia, such as Dr. Stephen Flynn, 7 hits in The Hill over a 5 years period.
"Head of the Délégation générale de l'intelligence économique": this is the thing that almost made me swing from delete to weak keep. Almost. But the sources are Another of these Carnet entries about the creation of the Délégation générale de l'intelligence économique, A Liberation article about the creation of the General Delegation that mentions the fact that Mr A is appointed as head of the delegation, and that the delegation will count up to 15 people.
That's it. 1.5 years later, this article talks about a presentation made by Mr A regarding economic intelligence and says the delegation was dissolved in May 2006.
So this delegation was created, Mr A was heading it, and then....nothing. Nothing was produced by the delegation, nobody heard anything about it, no newspaper ever mentionned it again and...it just disappeared 1.5 years later.
Conclusion: any person holding various staff member position with ministers and the like over a 10 year period and then gets elected at a local election will certainly gather some news coverage, but is there a significant coverage here? What do we have?
- 402 hits on Google.com, 494 hits on Google.fr (note: there seems to be a bug, as the results seem impressive when you hit the search button, but when you go ahead with the next button, you soon reach the end of the list).
- a total of 8 Carnet entries in Les Echos on his staff positions between 1994 and 2006,
- a total of 5 very short articles in Le Parisien covering the 2001-2007 period when he was a member of the Paris council (in 2 of these, Mr Asselineau is mentionned incidentally),
- 1.5 article (one article about the creation of the delegation, and one announcement of the appointment of Mr Asselineau) about the delegation. This delegation was so famous that it never received any other coverage for the next 1.5 years, not even to announce the fact that it was dissolved 1.5 years later.
- 1 article mentionning the party founded by Mr A in 2007.
This is not a significant coverage. This guy certainly does not meet WP:POLITICIAN criteria, and according to me does not meet the general notability guideline. He was not deleted from WP:fr for nothing. The only thing you need to have your article is to be notable, such as fr:Rassemblement pour l'indépendance et la souveraineté de la France to give an extreme right-wing example.