DETROIT LAKES — Candidate filing for county elected positions ended Tuesday, and six people are running for the Becker County auditor-treasurer job: Zac Baer, Brent Benscoter, Kim Frederick, Darin O. Halverson, Nathan Martin and Amy Rosing. The primary election is Aug. 11 and the top two vote-getters will face off in the general election on Nov. 3. The position will be open because incumbent Mary Hendrickson plans to retire this year. In other c…