Wisconsin businessman Tim Michels says he's running for U.S. Senate.
Michels is a Republican and joins Republican state Senator Bob Welch in the battle to take on Senator Russ Feingold next year.
Michels says he's raised $200,00 so far. Feingold, a Democrat, had $1.9 million as of June 30th.
The 41-year-old Michels says his campaign's main theme will be national security.
