Port of Pasco commission President Jean Ryckman led with 3,516 votes or 67 percent as of Tuesday evening in her bid to keep her seat.
Her challenger, Herb Brayton, 64, a senior buyer for Bechtel, had 1,723 votes or 33 percent as of the initial results.
Ryckman, 68, a retired Franklin PUD manager and the first woman to serve on the port commission, was appointed to the District 2 seat in July 2012 after former commissioner Ernie Boston retired.
Port commissioners will earn $9,600 per year plus $114 per meeting in 2014. The term is six years. Ballot counting will continue Wednesday. Election results will be certified Nov. 26.