WEB-FRANCE-POLITICS-OPPOSITION-AUBRY

Martine Aubry, after years in low-profile local politics, has made a significant comeback as the leader of the French Socialist Party. Since her reelection as Mayor of Lille, she has strengthened her position by rallying senior party members and advocating for a leftist platform. Known for implementing the 35-hour workweek, Aubry continues to face challenges, including a tight leadership race and rivalry with Segolene Royal.

What was the controversial measure introduced by the left a decade ago?

Who is Aubry's fiercest rival mentioned in the text?