Candidate filings for Oklahoma county offices open April 1.

Candidate filings for Oklahoma state and county offices begin Wednesday, April 1, at 8 a.m., with a deadline of 5 p.m. on Friday, April 3. County offices up for election include Assessor, Treasurer, and Commissioner District 1 and 3. Additionally, early voting for the Copan School Board election starts Thursday, April 2, at the Washington County Election Board office.