The Communist Party is the second largest political organization in France. Outnumbered only by De Gaulle's massive Union pour la Nouvelle Republique, it can count on drawing at least 20% of the votes in any nationwide election, and on winning at least 10% of the seats in the National Assembly. Despite its strength, however, it does not play a significant role in French politics. Since 1947, when the cold war began in earnest, the Communists have been rebellious outcasts, shunned by bourgeois parties and by the non-Communist left as well.
Last week their isolation abruptly ended. Wearing a broad smile and...