Career in local politics

Prior to his election to the National Assembly in 2012, Marleix was elected as Mayor of Anet in 2008, an office he held until his resignation in 2017 to focus on his parliamentary work. He also held a seat in the General Council of Eure-et-Loir from 2008 to 2014 for the canton of Anet. From 2008 to 2011, he held one of the general council's vice presidencies under the presidency of Albéric de Montgolfier.

Member of the National Assembly, 2012–present

In parliament, Marleix serves on the Committee on Legal Affairs. From 2017 until 2018, he chaired a parliamentary inquiry into whether France's government should subject foreign takeovers of French firms it has cleared to parliamentary scrutiny.^[2] In addition to his committee assignments, he is a member of the French-Moroccan Parliamentary Friendship Group.^[3]

In 2018, Marleix was appointed to the shadow cabinet of The Republicans leader Laurent Wauquiez and tasked with the industry portfolio.^[4]

After Christian Jacob's election as party leader, Marleix announced his candidacy to succeed him as leader of the party's parliamentary group in the National Assembly in November 2019; he eventually lost to Damien Abad of Ain.^[5]

Chair of the Republicans' Parliamentary Group, 2022–present

Following the 2022 legislative election, Marleix again put his candidacy forward for parliamentary leader.^[6] He faced Julien Dive of Aisne, whom he defeated with 40 votes against 20.^[7] Marleix took over from acting parliamentary leader Virginie Duby-Muller on 22 June 2022.