Although I imagine everybody is more interested by MACRON and PANZERGIRL these days, France's electoral history is so much more interesting.
Here's a fun map comparing the two far-left candidates Arlette Laguiller and Olivier Besancenot in 2002 - Arlette won 5.7%, Besancenot won 4.2%, so a 1.47% advantage to the former. Mapped at the constituency level, it produces an interesting map
In broad general terms, Arlette's lead over Besancenot was highest in the more working-class areas, particularly old decaying industrial regions (some, but not all, former Communist strongholds). In contrast, Besancenot did better than Arlette or came closest to her in the less working-class, especially most bobo, places - as the blue (Besancenot beat Arlette) constituencies in Paris, Lyon, Grenoble, Nantes, Bordeaux, Toulouse should tell you...
Great map!