The election of a Holy Roman Emperor was generally a two-stage process whereby, from at least the 13th century, the King of the Romans was elected by a small body of the greatest princes of the Empire, the prince-electors. This was then followed shortly thereafter by his coronation as Emperor, an appointment that was normally for life. In 1356, the Emperor Charles IV promulgated the Golden Bull, which became the fundamental law by which all future kings and emperors were elected. After 1508, the Pope recognized election alone to be sufficient for the use of the Imperial title. The last papal coronation took place in 1530. Although the Holy Roman Empire is perhaps the best-known example of an elective monarchy, from 1438 to 1740, a Habsburg was always elected emperor, the throne becoming de facto hereditary. During that period, the emperor was elected from within the House of Habsburg.
From the 13th century, the right to elect kings in the Holy Roman Empire was granted to a limited number of imperial princes, the so called prince-electors. There are various theories over the emergence of their exclusive election right. by Abraham Aubry, Nuremberg, 1663/64. The secular electoral seats were hereditary. However, spiritual electors were usually elected by the cathedral chapters as religious leaders, but simultaneously ruled as monarch of a territory of imperial immediacy. Thus the prince-bishoprics were elective monarchies too. The same holds true for prince-abbeys, whose prince-abbesses or prince-abbots were elected by a college of clerics and imperially appointed as princely rulers in a pertaining territory. Initially seven electors chose the "King of the Romans" as the Emperor's designated heir was known. The elected king then went on to be crowned by the Pope. The prince-electors were:
The King of Bohemia, of the House of Luxembourg at the time of the Golden Bull, but from 1526 onward ruled by the House of Habsburg. The Bohemian crown itself was also theoretically elective, but under the Habsburgs it became hereditary de facto.
Ulrich Schmidt: Königswahl und Thronfolge im 12. Jahrhundert. Böhlau, Cologne, etc.. 1987,,,.
Gerhard Baaken, Roderich Schmidt: Königtum, Burgen und Königsfreie. Königsumritt und Huldigungen in ottonisch-salischer Zeit. 2nd edn. Thorbecke, Sigmaringen, 1981, .