1906 French legislative election in the context of "French Section of the Workers' International"

The French Section of the Workers' International (French: Section française de l'Internationale ouvrière, SFIO) was a major socialist political party in France which was founded in 1905 and succeeded in 1969 by the present Socialist Party.

The SFIO was founded in 1905 as the French representative to the Second International, merging the Marxist Socialist Party of France led by Jules Guesde and the social-democratic French Socialist Party led by Jean Jaurès, who became the SFIO's leading figure. Electoral support for the party rose from 10 percent in the 1906 election to 17 percent in 1914, and during World War I it participated in France's national unity government, sacrificing its ideals of internationalist class struggle in favor of national patriotism, as did most other members of the Second International. In 1920, the SFIO split over views on the 1917 Russian Revolution; the majority became the French Communist Party, while the minority continued as the SFIO.