The appointment was made behind closed doors by the Democratic committeemen. Bridget Gainer, 40, who is an executive with AON, was chosen.
"I've always been interested in public service. I'm very active on several boards that work with either low-wage workers or low-income finance issues, and my family is very dedicated to public service. So, it's always been an interest of mine," Gainer said.
The new commissioner is pledging to take action on environmental issues. She has held positions at the Chicago Park District and city hall's budget office.
Gainer beat out Quigley's chief of staff for the position.