Could France have become communist after WW2? There was a big workers movement going for a while(until they derailed a train and killed a bunch of people), and the economy was having all kinds of problems. If so, what would change?
(1) There was no prospect of the PCF coming to power by parliamentary means, because even at the height of its electoral appeal in 1945-46 it never got more than 28 percent of the vote, and the SFIO was unwilling to agree either to "organic unity" with it or to a purely left-wing Communist-Socialist government--it insisted on the inclusion of the Christian Democratic MRP in the government. https://groups.google.com/d/msg/soc.history.what-if/ChLK4cGGqxc/Nz-4KfNmCwcJ
(2) Given the extremely tough policies of the Socialist Minister of the Interior Jules Moch, https://books.google.com/books?id=gOUcBQAAQBAJ&pg=PA252 it is unlikely the 1947 strike wave could have led to a Communist take-over. As long as the government stood firm, eventually the strikers would become hungry and realize they were only worsening their own economic position. Of course, US aid helped to stabilize the government https://books.google.com/books?id=rnS4wOYyuCgC&pg=PA86 so if you had a really isolationist government in Washington, the PCF's prospects might have improved.