After the Young Turk Revolution in 1908 and during the Second Constitutional Era Sandanski (in association with Hristo Chernopeev, Chudomir Kantardziev, Aleksandar Buynov and others) contacted the Young Turks and started legal operation. After the disintegration of IMARO, they tried to set up the Macedonian-Adrianople Revolutionary Organization (MORO). Later, the congress for MORO's official inauguration failed and Sandanski and Chernopeev started to work towards a creation of one of the left political parties in the Ottoman Empire – People's Federative Party (Bulgarian Section), whose headquarters was in Solun. This federalist project was supposed to include different ethnic sections in itself, but this idea failed and the only section that was created was the faction of Sandanski, called Bulgarian section. In this way its Activists only "revived" their Bulgarian national identification, as Sandanski's faction advocated the particular interests of the "Bulgarian nationality" in the Empire. In 1909 the group around Sandanski and Chernopeev participated in the rally of the Young Turks to Istanbul that led to the deposition of Sultan Abdul Hamid II from the throne. Sandanski dreamed about the creation of a Balkan Federative Republic according to the plans of the Balkan Socialist Federation and Macedonia as a part of that Federation. He demanded that the IMARO should embrace all nationalities in the region, not only Bulgarians.