It follows yesterday’s resignation by former party member Brian Duffin after he lost his appeal against a conviction for sexually assaulting a teenage girl.
Confirming there will not be a by-election, a spokesperson for the Antrim and Newtownabbey Borough Council said: “Councillor Duffin originally represented SDLP and therefore the party will co-opt a new member in due course.”
The party is now moving to fill the Dunsilly Ward vacancy.
An SDLP spokesperson said: “In these instances, party procedures must be followed. Interested members have been invited to apply, once applications are submitted, due process will be followed to select a successor.”
Duffin (73), who sat as an independent councillor after quitting the SDLP in February, will be sentenced in the new year. On his initial conviction in August, he was handed a four-month jail term.