radicalism, in French history, a political movement that emerged following the July Revolution of 1830 and eventually resulted in the formation of the Radical Party (Parti Radical; in full Parti Radical et Radical-Socialiste) in 1901, the oldest existing French political party.
The French term radical, which was borrowed from English, originally served as a proxy for républicain (“republican”), a political appellation banned after the start of the July Monarchy (1830–48) of Louis-Philippe, duc d’Orléans. In August 1830, following the abdication of the Bourbon king Charles X, Louis-Philippe was proclaimed “king of the French” (rather than king of France) by the country’s provisional government. French and British radicals shared a common belief in government by consent and an attachment to the cause of the growing middle class. In France, the appellation was adopted by a segment of opponents to the July Monarchy who, unlike socialist revolutionaries such as Armand Barbès (1809–70) and Auguste Blanqui (1805–81), relied on legal means and advocated fundamental reforms rather than demanding outright regime change. The French radical movement has retained this reformist outlook to the present day.
With the election of Alexandre-Auguste Ledru-Rollin (1807–74) to the national Chamber of Deputies in 1839, the radical movement entered the mainstream of French politics. During the early stages of the Third Republic (1870–1940), radicals began to occupy key positions of power. As president of the Chamber of Deputies from 1879 to 1881, Léon Gambetta (1838–82), then an acknowledged leader of the radical movement, popularized radical ideas and advocated fundamental reforms that included not only universal (adult male) suffrage but also free education, freedom of the press, freedom of assembly, the separation of church and state, and the right to trial by jury for political offenses. Following the defeat of the revolutionary insurrection known as the Commune of Paris (1871), which Gambetta opposed, he and other radical leaders took a more pragmatic turn, finding opportunities to advance laïcité (secularism) and other moderate republican causes but also downplaying or abandoning some of the more extreme ideas he had earlier promulgated.
The foundation of the Radical Party in 1901 was designed to unify all radicals in a common organization before a legislative election scheduled for the following year. The party’s first congress, which was attended by hundreds of national legislators and mayors, demonstrated its broad support among significant segments of the French political establishment. The principles that transcended the party’s relatively broad ideological spectrum included secularism, commitment to both private property and social justice, and a balance between democracy and decentralization. Following the election, the radicals succeeded in forming a coalition government that proceeded to exile almost all religious orders from France and to dismantle the public functions of the Roman Catholic Church, including education. The formal codification of the radicals’ separation of church and state, the Act of Separation, was signed into law in 1905 by Maurice Rouvier (1842–1911), a former follower of Gambetta.
For more than 40 years, the Radical Party played a central role in most governments of the Third Republic. Among the most important radical figures of the period was Georges Clémenceau (1841–1929), who led France to victory in World War I. However, the party’s influence significantly declined with the advent of the Fourth Republic (1946–58) following World War II. A few radicals won seats in the French lower chambers in the elections of 1958, 1962, and 2012, but the party never regained its former political clout.
In the early 1970s disagreements between the centrist wing of the Radical Party and its left wing, which sought to join an electoral coalition of the left, led to the creation of a new leftist radical movement, which later formed its own party under the name Left-Wing Radical Party. The two parties participated in opposing governments, each forming alliances with other parties of the right and the left.
In the 21st century the Radical Party occupied a relatively marginal presence in the French political landscape. In 2012 six members of the party were elected to the National Assembly, the lower chamber of the French legislature, representing 1 percent of its seats. In 2017 the Radical Party and the Left-Wing Radical Party formed a joint Radical Movement, which led to the parties’ reunification under the original name Radical Party in 2021. Under the leadership of the French politician Laurent Hénart, the Radical Party attempted to maintain its traditional dedication to secularism, private property and social justice, and democracy and decentralization. With regard to France’s place in Europe, the radicals sought to demarcate themselves from other parties by advocating a more decentralized vision of the European Union.