Barrès was elected deputy of the Seine in 1906, and retained his seat until his death. He sat at that time among the Entente républicaine démocratique conservative party. In 1908, he opposed in Parliament his friend and political opponent Jean Jaurès, refusing the Socialist leader's will to Pantheonize the writer Émile Zola. Despite his political views, he was one of the first to show his respect to Jaurès' remains after his assassination on the eve of World War I.
Barrès was elected deputy of the Seine in 1906, and retained his seat until his death. He sat at that time among the Entente républicaine démocratique conservative party. In 1908, he opposed in Parliament his friend and political opponent Jean Jaurès refusing the Socialist leader's will to Pantheonize the writer Émile Zola. Despite his political views, he was one of the first to show his respect to Jaurès' remains after his assassination on the eve of World War I.