This work collects decades of the best published scholarship in English on the unequivocally most successful political party in Japanese history: the Liberal Democratic Party (the LDP). Governing Japan for almost the entirety of the post-war period, the LDP also has a claim to be the most successful political party in any post-war democracy. Seminal articles in this collection explore the key aspects of the LDP: the party’s evolution since its founding in 1955; key facets of the LDP’s internal organization including factions and koenkai; the LDP in policy-making, including its relationship with the bureaucracy and interest groups, as well as its policy-making committee apparatus; and, party leadership, including the premierships of Junichiro Koizumi and Shinzo Abe.