Legco maverick Albert Chan Wai-yip yesterday quit the Democratic Party, a day after Yeung Sum succeeded Martin Lee Chu-ming as chairman.
Mr Chan's decision marks the latest split in the pro-democracy camp. Although members and observers said his departure would help rebuild unity in the shattered party, some also warned defections by members of the radical wing would increase the party's distance from its roots.
In a statement issued a day after the leadership reshuffle, Mr Chan said he had serious differences with the party, which he helped to found in 1994.
'I believe my decision to resign can reduce the internal conflicts in the Democratic Party,' he said.
Well known for his criticism of 'officials colluding with business' on nearly all policy aspects and his identification with grassroots interests, the Legco firebrand has long been vocal on livelihood issues.
'Going now is better than starting more shouting matches within the party. If you want me to twist my principles and betray my beliefs in order to stay in the party, it would be an even bigger betrayal to the voters,' he said.
But he said his resignation was not a reaction against any member of the party, and he would continue to co-operate with the pro-democracy camp. He would not join other parties and would remain as an independent in the legislature, he said.