King Wenceslaus succeeded in bringing the Electors of Brandenburg and Saxony over to his side: Albert II, Duke of Saxony signed an electoral pact on 29 November 1291 that he would vote the same way as Wenceslaus; Otto IV, Margrave of Brandenburg-Stendal made a similar commitment.
Siegfried II of Westerburg, Archbishop of Cologne, believed that the Emperor should not receive the crown as an inheritance from his father, but should be freely selected by the College of Electors.
von Eppstein [de], the Archbishop of Mainz, to seek a candidate who would principally serve their interests.
They were ready to elect him, provided he make extensive concessions to the Electors and follow their political demands.
On 5 May 1292 in Frankfurt am Main, the Archbishop of Mainz, in the name of all the electors, elected Adolf King of the Germans (Emperor-Elect).