Gaitskellism
Wilson went on to become Prime Minister in the 1964 election, holding the position from 1964 to 1970 and from 1974 to 1976. Despite being a former Bevanite, Wilson largely followed Gaitskellite economic policies, and the former Gaitskellite Callaghan followed Wilson as Prime Minister from 1976 to 1979 and Party Leader from 1976 to 1980.
James Wilson (Secretary of Agriculture)
Wilson rose to national prominence in early 1897 when newly elected President William McKinley nominated him as his Secretary for Agriculture. During sixteen consecutive years of Republican administrations, Presidents McKinley, Theodore Roosevelt and William Howard Taft retained him in that position. It was not until March 1913, following the election of a Democratic president (Woodrow Wilson) that Wilson left that office. In all, Wilson served as Secretary of Agriculture from March 6, 1897 to March 5, 1913 — the longest duration served by any American cabinet official. The length of Wilson's tenure is attributed to not only the same political party occupying the White House in three consecutive administrations, but also the similarity in political philosophy among the three Presidents under which Wilson served. Given the state of national politics which developed in the 20th and 21st centuries, it is unlikely any Cabinet member will exceed Wilson's mark.