In 1903 Emmeline and her daughters Christabel (1880–1958) and (Estelle) Sylvia (1882–1960) founded the Women’s Social and Political Union, with the motto ‘Votes for Women’. Following the imprisonment of Christabel in 1905, Emmeline initiated the militant suffragette campaign and was responsible for keeping the suffragette cause in the public eye until the outbreak of World War I.