There is a website, but no official announcement.
State Rep. Tim Ramthun, a conservative Republican from Campbellsport, has a website that says he’s running for governor this fall. Ramthun would be the third Republican in the race. He, however, has not made an announcement. Ramthun has made the headlines this year for demanding a full audit of Wisconsin’s voting machines, accusing the Assembly Speaker of colluding with Hillary Clinton over ballot drop boxes, and for having his statehouse staff reassigned.
Ramthun’s website says he is a servant “of, by, and for the people.”