Incumbents secured wins for the Humboldt County Board of Supervisors seats on Tuesday, while Diane Amundson outflanked a strong field of Republican challengers for the right to run for Humboldt County Recorder this fall. Countywide, of the 6,921 registered voters, 1,256 or 18.14 percent cast ballots in Tuesday’s primary. All of the contested races came on the Republican side, with a battle for two of three supervisor districts, a six-person battle for county recorder and a five-person race for U.S. Senator. For Supervisor District 1, incumbent Harlan Hansen topped the three-person field with 107 votes, compared to 80 votes for Brian Ernst and 45 votes for Dean Potratz, the two challengers. For Supervisor District 3, incumbent Rick Pedersen topped challenger Kevin Clabaugh 134-76. District 2 Supervisor Carl Mattes ran unopposed and received 206 of the 212 votes cast. No Democrats sought the office of county supervisor.