The high imperial positions of electors were held by three archbishops (the archbishop of Mainz, Cologne and Trier) and four secular rulers (the king of Bohemia, duke of Saxony, margrave of Brandenburg and Rhineland Palatinate count).
Later, the dukes of Bavaria and Brunswick-Lüneburg (Hanover) were added, and in 1803 (just before the Empire was abolished by Napoleon Bonaparte) also Baden, Wuerttemberg and Hesse.