A friend of mine noted something that I slipped by me at first: France is clearly the wrong color in the 2000 map unless they are foolishly counting Jospin as proof of a leftist government.
In a cohabitation system, the PM becomes the dominant domestic policy figure and the presidentialist system finds itself transformed into a parliamentary system. It's quite correct to judge France as left in 2000, because domestic policy was made by a left-wing government. Unless you're arguing from a 'Jospin is not a left-winger' mode.