 Duane Davidson and Michael Waite, both Republicans, finished as top two in the primary election and advanced to the general election, marking the first time since the top-two system had been instituted that both of the primary slots in any statewide race had been won by Republicans.In the general election, Duane Davidson received the endorsements of every county treasurer in Washington state, both Democrat and Republican, as well as Washington Secretary of State Kim Wyman.Michael Waite was endorsed by former state Auditor Brian Sonntag and former state Attorney-General Rob McKenna.