Arbory and Rushen Commissioners will have a contested by-election in December.
Two candidates, Mark Firth and Rachael Reilly, have stepped forward to fill the sole vacant seat in its Arbory Ward.
It was left empty by Kirrie Jenkins after her election to the House of Keys in September.
Residents in Arbory will be able to vote on December 3 from 8am until 8pm at Ballabeg Parish Hall.
The local authority says it will organise hustings for residents to be able to ask questions and meet the candidates.