Hyer, who sits on the Olympia city council, is also running for county treasurer. He also might be applying to temporarily fill the position that is already being vacated by the sitting treasurer.
The proposed bill does have some built in wiggle room:
Any elected official holding two positions prior to this bill's effective date may continue to serve out the remainder of each term. At the expiration of each term, that elected official may subsequently only hold one elected office at a time.
So, if the law becomes effective this summer, Hyer is appointed to fill out the remainder of the open treasurer term and is elected in November, it sounds like he'd need to resign the city council soon after that.