He has served as Interim leader of the National Front since 28 April 2017, after previous interim leader Jean-François Jalkh stepped down.
Briois was born in Seclin, Nord, where his father was a worker and his mother a bookkeeper. His parents later divorced. Fascinated by Jean-Marie Le Pen, he became a member of Front National at the age of 16. After finishing a Brevet de Technicien Supérieur, Briois worked for a period as a salesman for Numericable.
In 1995 Briois became a member of the municipal council in Hénin-Beaumont, and in 1998 a member of the regional council of Nord-Pas-de-Calais. When Bruno Mégret broke from Front National in 1998, Briois followed him, but returned to FN in 2000.
In the 2008 French municipal elections, Briois ran for mayor in Hénin-Beaumont on a list which had Marine Le Pen in second spot. Receiving 28.83% of the votes, the bid failed in its first round, with the list getting 5 of the 35 seats in the municipal council.
The elected mayor, Gérard Dalongeville, resigned from his post in 2009 following allegations of economic irregularities, resulting in a by-election. The list of Briois obtained 39.34% of the votes in the first round of that election, but lost in the second round with 47.62% of the votes to a miscellaneous left list which obtained 52.38%.
Briois was elected member of the central committee of National Front in 2007. After Marine Le Pen became president of the party in 2011, Briois was named general secretary of the party.
In the 2014 French municipal elections, Briois was elected mayor or Hénin-Beaumont in the first round in March with 50.26% of the votes. He was elected a member of the European Parliament for North-West France in the European Parliament elections in May the same year. Briois was placed second on a list led by Marine Le Pen, which obtained five seats.
At the Front National Congress in Lyon in November 2014, Briois was elected one of the vice-presidents of the party, responsible for local executives and supervision, and was succeeded by Nicolas Bay as general-secretary.
In the book Le Front National des villes et le Front National des champs, published in 2013, author Octave Nitkowski wrote that Briois was gay. Briois, who neither denied or confirmed the information, demanded along with another politician that the book be stopped for violation of privacy. A local court ruled that the book be stopped for this reason, but the Court of Appeal of Paris overturned the decision with regard to Briois, stating that for leading politicians, the public's right for information carried more weight than the politician's right for privacy.
In January 2015, Briois received the Le Trombinoscope prize for local politicians of the year. The prizewinner is selected by French journalists, and Briois was selected as a symbol of Front National's success in the 2014 elections. It was the first Le Trombinoscope prize awarded to a politician for the Front National. The award ceremony was held in the office of the President of the National Assembly, but President Claude Bartolone did not attend to protest the prize being awarded to Briois. French prime minister Manuel Valls, Minister of Ecology Ségolène Royal, and Minister of Economy Emmanuel Macron, who also had won awards, also did not attend, but sent representatives to the ceremony.
Steeve Briois has contested numerous elections under the FN banner:
European Parliament elections