Republican state Rep. Don Pridemore, 66, of Hartford, is running for Wisconsin state schools superintendent.
Pridemore registered his campaign committee with the state elections board on Wednesday. He joins incumbent state superintendent Tony Evers as the only announced candidates so far seeking the post.
Pridemore was re-elected to his fifth term in the Assembly in November. He was not contested.
Candidates seeking to become secretary of the Department of Public Instruction can begin circulating nomination papers on Saturday. They are due to be returned on Jan. 2.
The election is April 2 but if more than two candidates run there will be a Feb. 19 primary.
The post is officially nonpartisan and the term runs for four years.