City of Perth Councillor Reece Harley is the latest contender in the race for Mayor ahead of the local government election on October 17.
The 28-year-old Perth resident is running against mechanical engineer and business-owner Mike O�Hanlen.
Mr Harley, who has been a City of Perth councillor since 2013, said he was running to inject some �fresh blood� into the role.
With his four-year term in council set to end in 2017, a by-election would be necessary to fill the Perth ward if Mr Harley wins the mayoral election.
Chief executive Gary Stephenson said it would cost approximately $30,000 for a by-election.
�There is provision in the Local Government Act 1995 to consider holding the position vacant until the following election,� Mr Stephenson said.
�This would be subject to the consideration of Council and the WA Electoral Commissioners.
Mr Harley said the cost of a by-election was �unfortunate�.
�I would prefer to see the candidate with the fifth highest votes get elected, as it would make logical sense if there were five vacancies on Council,� he said.