 Müller contacted Arthur Crispien of the USDP to negotiate entry of the far-left party into the existing coalition.Crispien harshly refused and Müller handed back the task of forming a government on 12 June.Since the next two parties in terms of the share of the vote were the USDP and DNVP and they occupied extreme positions in the political spectrum that made it unlikely that they would be able to form a government, on 13 June Ebert next turned to Rudolf Heinze of the DVP.