UPDATE 1-Far-right Le Pen wins seat as party gets at least six lawmakers

(Adds Collard elected, quotes)

PARIS, June 18 (Reuters) - French far-right leader Marine Le Pen said on Sunday her party had won at least six seats in parliament, including her own, although a key aide was eliminated in a night President Emmanuel Macron's party swept the elections with a huge majority.

Gilbert Collard, an outgoing lawmaker held off the challenge of a former bullfighter to keep his seat in the southeast of the country, while Le Pen said at least five other candidates in the north of the country won seats.

Interior Ministry data showed Le Pen's partner Louis Aliot was also elected in the southwest.

"We are the only force of resistance to the dilution of France, its social model and identity," Le Pen said in a televised address in her northern fiefdom of Henin-Beaumont.

"We shall fight with all our strength the harmful projects of the government, which is only in place to implement the roadmap sent by Brussels."

However, Florian Philippot, the party's vice-president and Le Pen's right hand man, who has been at odds with some in the party line over its European strategy, failed to win the seat he was fighting for. (Reporting by Andrew Callus and John Irish; Editing by Leigh Thomas and Ingrid Melander)