French communist were even more pro-Moscow than the Italian ones.
Italian communist started to distance themselves from Moscow in 1956, after Krutschev made the famous speech about Stalin's crimes. The real breach (and the birth of euro-communism) was in 1968, after the invasion of Prague.
French communist never really dissociated from Moscow, they were the most faithful communist party in western Europe.
However, keep in mind that French CP was much smaller than Italian CP (one to 2, more or less), and the respective socialist parties were the other way around.
At the Italian elections in 1948 Christian Democrats won, with a lot of support (and money) from the USA. There were talks of stuffed ballots, but IMO nothing very outrageous happened.
I suppose that a red victory might have provoked an American-sponsored coup, and possibly a civil war.