 Both lines claimed the Saxon "electoral dignity" or privilege, which led to confusion during the 1314 election of the Wittelsbach duke, Louis of Bavaria as King of the Romans against his Habsburg rival, Duke Frederick the Fair of Austria, as both candidates received one vote each from each of the two rival Ascanian branches.Louis was succeeded by the Luxembourg king, Charles of Bohemia.After his coronation as Holy Roman Emperor in 1355, Charles issued the "Golden Bull of 1356", the fundamental law of the Empire settling the method of electing the "German King" by seven Prince-electors.