2015年佢以「自護聯邦」名義參加區議會選舉，喺鶴園海逸選區（G17），結果以950票落選。2015年12月，楊繼昌成立民主進步黨，並擔任民主進步黨幹事長。
In 2015, he ran in the District Council election under the name of "Self-Defence Federation" and lost the election in Hok Yuen Harbour Plaza (G17) with 950 votes. In December 2015, Yang Jichang established the Democratic Progressive Party and served as the secretary general of the Democratic Progressive Party.