The Parti Ouvrier Français claimed to represent the “revolutionary” and “scientific” socialism of Marx. It accepted the familiar doctrines of “orthodox” Marxism, which it popularized in France. It affirmed its revolutionary character by denying the possibility of reforms in capitalist society and by insisting upon the necessity of seizing the political power of the State in a revolutionary way.

In 1886 J. Guesde wrote as follows:

In the capitalist régime, that is, as long as the means of production and of existence are the exclusive property of a few who work less and less, all rights which the constitutions and the codes may grant to others, to those who concentrate within themselves more and more all muscular and cerebral work, will remain always and inevitably a dead letter. In multiplying reforms, one only multiplies shams (trompe-l'oeil).[60]

Inability to carry out real reforms was ascribed to both national legislative bodies and to the municipalities. Therefore,

if the party has entered into elections, it is not for the purpose of carving out seats of councillors or deputies, which it leaves to the hemorrhoids of bourgeois of every stamp, but because the electoral period brings under our educational influence that part of the masses which in ordinary times is most indifferent to our meetings.[61]

The municipalities conquered were to become just so many centres of recruiting and of struggle. The Parti Ouvrier was to be a “kind of recruiting and instructing sergeant preparing the masses for the final assault upon the State which is the citadel of capitalist society.”[62] For only a revolution would permit the productive class to seize the political power and to use it for the economic expropriation of capitalistic France and for the nationalization or socialization of the productive forces. Of course no man and no party can call forth a revolution, but when the revolution which the nineteenth century carried within itself arose as a result of national and international complication, the Parti Ouvrier would be the party to assume the rôle of directing it.[63]

The Parti Ouvrier adopted a centralized form of organization. It became in time the strongest and best organized socialist party of France. It was particularly strong in the Department du Nord and among the textile workers. It was also known as the “Guesdist” party, after its leader Guesde.

The Parti Ouvrier denounced the members of the Parti Ouvrier révolutionnaire socialiste, or “Broussists,” also thus named after their leader Brousse, as “opportunists and possibilists” because they believed in the possibility of reforms and had said that it was necessary “to split up our program until we make it finally possible.”[64] The nickname, possibilists, has remained as another designation of the Broussists.

The Broussists cared little for the theories of Marx. They were disposed to allow larger differences of doctrine within their ranks and more local autonomy in their organization. They ascribed much importance to municipal politics. They conceived the conquest of political power as a more peaceful process of a gradual infiltration into the municipal, departmental and national legislative bodies. But like the “Guesdists,” they were collectivists and took the class struggle as their point of departure.

From the very outset, the Broussists concentrated their efforts upon gaining an entrance into Parliament and into the municipalities. They had a numerous following in Paris among the working population, and among the lower strata of the middle class.