Cathy Gross will serve on the Monticello city council for the next four years.
The Democrat won the Ward Three seat after a recount.
She defeated incumbent Republican David Kelly by one vote.
Gross was sworn in Wednesday and says her goal is to be a voice for the people, especially city employees.
Both she and Kelly received 233 votes after the November 8th election, but Gross picked up an additional vote from a provisional ballot during the recount which was confirmed, Friday.