Newcomer Michael Bergagnini, who serves as the mayor of Parkerfield, also has filed for the college board.
These two joined incumbent Brian Sanderholm and former county commissioner Gary Wilson this week.
Meanwhile, in the race for the USD 470 Board of Education, Rhoda MacLaughlin-Ramirez has joined local banker Lance Niles.
No incumbents are expected to file for re-election to the school board. There are three seats available.
Finally, Milissa Robb has filed for the City Commission of Arkansas City, joining Tim Perry and Kanyon Gingher, as well as incumbent commissioners Jay Warren and Karen Welch.