 The Constitutionalist party was the first legally registered political party in China.During the Wuchang Uprising, the first politician to side with the mutineers was Tang Hualong, a Constitutionalist and leader of the Hubei provincial assembly, who took over the civilian administrative side of the revolution.Fed up with years of frustration, many Constitutionalists joined the Xinhai Revolution, one noticeable exception was Kang Youwei who remained loyal to Emperor Puyi.