Incumbent Jeff McCarthy is the only candidate who filed papers for the 3rd Aldermanic District, according the Brookfield City Clerk on Wednesday.
McCarthy must run for re-election after he was appointed in March to the seat held by Jim Garvens, 75, who died last February following complications due to knee surgery.
After the election in April, the seat will be up for reelection in April of 2014 during its regular cycle. Aldermen serve four-year terms with an annual salary of about $10,000.
Incumbent Glen Allgaier will run unopposed for the Area II seat of the Elmbrook School Board. Former School Board member Gary Jones will run unopposed for the at-large seat after Robert Ziegler decided not to seek reelection.
School Board members make $3,600 a year and serve three-year terms.