Palino admitted meeting Chuang but denied any knowledge of her affair until it appeared in media two days later.
Chuang also claimed to have been romantically involved with a member of Palino's campaign team, Luigi Wewege.
Palino stood again at the 2016 elections, coming fourth behind Phil Goff, Vic Crone and Chlöe Swarbrick. In 2020, he returned to his native America with his partner and young son.
Palino is standing on his previous campaign theme of creating new urban centres on unproductive land to manage population growth and social issues.
"This is a chance to develop Auckland into a world-recognised city for providing jobs, education, entertainment, sports, recreation and housing. A city that we can all live, work, play and learn in," Palino said.
"My vision for Auckland in developing additional CBDs is also a responsible strategy to global warming. Currently in Auckland, the removal of green areas, whether it be parks or backyards, has moved us further away from our agenda," he said.