Republican councilmember Jack Preiss and Democrat Kathleen Ronan, both serving terms ending in December 2018, resigned from office in September 2016. Preiss cited time conflicts with his work duties, while Ronan expressed her frustrations with working with the rest of the council. Louis Cartabona was chosen to fill the seat held by Preiss. In October, the council selected Jennifer Gable from a list of three nominees submitted by the Democratic municipal committee to fill Ronan's vacant seat. In the 2017 general election, Louis J. Cartabona and Alan Singleton were elected to serve the balance of the two unexpired terms of office.