While Hitler and Eckart were on a fundraising trip to Berlin in June 1921, a mutiny broke out within the Nazi Party in Munich. Members of its executive committee wanted to merge with the rival German Socialist Party (DSP). Hitler returned to Munich on 11 July and angrily tendered his resignation. The committee members realised that the resignation of their leading public figure and speaker would mean the end of the party. Hitler announced he would rejoin on the condition that he would replace Drexler as party chairman and that the party headquarters would remain in Munich. They capitulated to Hitler's demand and on 29 July 1921 a special congress was convened to formalize Hitler as the new chairman (the vote was 543 for Hitler and one against).